1 - ________________ cells converts solar energy into electrical energy
photovoltaic
2 - 1024 can be written in scientific notation as
1.024x10^3
3 - 1st law of motion gives the definition of
force
4 - 2nd law of motion gives the definition of
acceleration
5 - 3rd law of motion explains
existence of pair of forces in nature
6 - A body can have consutant velocity when it follows a
rectilinear path
7 - A body in equilibrium
may be at rest or in uniform motion
8 - A body is falling freely under gravity. How much distance it falls during an interval of time between 1st and 2nd seconds of its motion, taking g=10?
14 m
9 - A body is moving with uniform velocity. Its
displacement from origin changes
10 - A body of 2 kg is suspended form the ceiling of an elevator moving up with an acceleration g. Its apparent weight in the elevator will be
39.2 N
11 - A body will be in complete equilibrium when it is satisfying
both Ist and 2nd condition of equilibrium
12 - A central force is that which
can not produce torque
13 - A chimney works works best if air exposed to the chimmey is
moving fast
14 - A convex and concave lens of focal length f are in contact the focal length of the combinations will be
infinite
15 - A convex lens acts as a diverging lens if the
both (b) and (c)
16 - A convex lens gives a virtual image only when the objects lies
between principal focus and optical center
17 - A convex lens of focal length f1 and a concave lens of focal length f2 are placed in contact. The focal length of the combination is
f1f2/f1-f2
18 - A cup of milk is placed in a microwave oven. Tell which statements is false (1) Milk will be heated up only (2) Cup will remain cool (3) Both cup and mild will get hot.
3
19 - A cyclist cycling around a circular racing track skids because
the centripetal force upon him is greater then limiting friction
20 - A diffraction grating has 500 lines per mm. Its slit spacing or grating element will be equal to
2 x 10-3 mm
21 - A digit zero in a measurement
may be significant may not significant
22 - A field in which the work done in a moving a body along closed path is zero is called
conservative field
23 - A hoop and disc have same mass and radius. Their rotational K.E are related by an equation
K.Ehoop = 2K.Edisc
24 - A lens which converges a beam of parallel rays to a point is called
converging (or convex) lens
25 - A lens, which is thicker at the center and thinner at the edges is called
convex lens
26 - A light ray traveling form rarer to denser medium suffers a phase change of
180 Degree
27 - A man is in a car is moving with velocity of 36km/hr. His speed with repect to the car is
zero
28 - A man lifts vertically a weight of 40kg through 1m in 10s; while a chile lifts vertically a weight of 10kg through a distance of 1m in 1s. What will be correct inference?
child does more work than man
29 - A man of weight W is standing on an elevator which is ascending with an acceleration a. The apparent weight of the man is
mg + ma
30 - A man standing near a fast moving train may fall
towards the train
31 - A point source of light placed in a homogeneous medium gives rise to
a spherical wave front
32 - A point where the incident parallel rays of light converge or appear to diverge after passing through a lens is called
focus
33 - A satellite moving round the earth constitutes
non inertial frame
34 - A simple pendulum has a bob of mass m and its frequency is f. If we replaced the bob with a heavier one say of 2m then that will be its new frequency?
frequency lower than 20 Hz
35 - A simple pendulum suspended form the ceiling of a lift has time period T when the lift is at rest. When the lift falls freely, the time period is
infinite
36 - A spectrometer is used to find
all of the above
37 - A stationary wave is set up in the air column of a closed pipe. At the closes end of the pipe
always an node in formed
38 - A stone is whirled in a vertical circle at the end of a string. When the stone is at the highest position the tension in the string is
equal to the weight of the stone
39 - A thing that emits its own light is
luminous
40 - A vector can be multiplied by a number. The number may be
all a, b and c are correct
41 - Absolute uncertainty in a measurement depends upon
least count of the instrument
42 - According to Einstein light travels form one place to another in the form of
photons
43 - According to Einstein the gravity interaction is possible between
material objects and electromagnetic radiation only
44 - According to equation of continuity A1V1 = A2V2 = constant. The constant is equal to
flow rate
45 - According to Newton sound travel in air under the conditions of
isobaric
46 - According to Pascals law the pressure of gas in a vessel is
Same in all direction
47 - Addition of vector obeys
all given laws in a , b and c
48 - Adiabatic process is also called
Isentropic process
49 - An elevator weighing 3.5 x 10-6 N is raised to a height of 1000 m in the absence of friction, the work done is
3.5 x 109 J
50 - An ideal standard of measurement of a base quantity has characteristics
only a and b are correct
51 - Angle between two vectors A and B can be determined by
their dot product
52 - appearance of colour in thin films is due to
interference
53 - Area under velocity time graph represent
distance
54 - At constant temperature the graph between V and 1/P is
A straight lime
55 - At Murree Hills (Assume value of g changes). If we use a simple pendulum as time standard then one second duration will.
increase
56 - At which angle the range of the projectile is maximum
45 Degree
57 - Average translational kinetic energy per molecule of an ideal gas is given by
3RT/2Na
58 - Beats are the results of
constructive and destructive interference
59 - Bernoullis equation is applicable for
both laminar and turbulent flow
60 - Biomass can be converted into fuels by
both (a) and (b)
61 - Blood vessels are
not rigid
62 - Boltzman constant K in terms of universal gas constant R and Avagadros number Na is give as
K = R/Na
63 - Boyles law helds for ideal gases in
isothermal processes
64 - Burnoullis equation is obtained by applying law of conservation of _
energy
65 - Carburetor of a car is a application of
Both (a) and (b)
66 - Central spot of Newtons rings
bright
67 - Centripetal force performs
no work
68 - Coefficient of viscosity of honey is greater than
water
69 - Concentration of red cells in blood is about
0.5
70 - Critical angle is that incident angle in denser medium for which angle of refraction is
90 Degree
71 - Crystals of a material can behave as
Diffraction grating
72 - Diffarction fringes are
distance between then decreases
73 - Diffraction effect is
more for a sharp edge
74 - Dimension of pressure is
ML-1T-2
75 - Dimensional analysis is helpful for
only a and b are correct
76 - Dioptre power of an concave lens of 10 cm focal length is
10 dioptre
77 - Dispersional effect may produce error in light signals. This type of error
multimode graded index fibre
78 - Displacement of the body in S.H.M is equal to amplitude when body is at
extreme position
79 - Distance covered by a freely falling body in 2 seconds will be
19.6 m
80 - Doppler effect applies to
both sound and light waves
81 - Drag force is given by
Stokes law
82 - During long jump, athlete runs before taking the jump. By doing so he
increases his momentum
83 - Electrical resonance is observed in
radio
84 - Equation of continuity is obtained by apply in law of conservation of
mass
85 - Errors in the transmission of power through optic fiber can be minimized by using a
Graded index fiber
86 - Final image produced by a compound microscope is
virtual and inverted
87 - Flight of a rocket in the space is an example of
third law of motion
88 - For _________ flow the path of the fluid particles cannot be tracked.
turbulent
89 - For a gas obeying Boyles law if the pressure is doubled the volume becomes
one half
90 - For a simple pendulum the restoring force is caused by
gravity
91 - For normal adjustment, length of astronomical telescope is
fo + fe
92 - For the successful operation of Heat engine which condition should be met.
both (a) and (b)
93 - For which position maximum blood pressure in the body have the smallest value ?
laying horizontally
94 - Forced vibration are known as
driven harmonic vibration
95 - Fundamental frequency of stationary waves in open pipe is ________ times the frequency in closed pipe.
Two
96 - Gas molecules of different masses in the same container have the same average transnational kinetic energy which is directly proportional to their
absolute temperature
97 - Geo-stationary satellite completes one rotation around earth in
24 hours
98 - Geothermal energy is a ____________________ source of energy.
renewable
99 - gives the definition of metre in terms of wavelength of red cadmium light
Michelson
100 - Gravitational P.E of a body has
no general formula
101 - How many days would be in a year if the distance between the earth and the sun were reduced to half of its present value (assuming circular orbit)?
129 days
102 - How many main frontiers of fundamental science?
3
103 - How many types of units are in SI?
three
104 - i^ . (j^ x k^) is equal to
1
105 - Ideal fluid is
possess all properties
106 - If a body a mass of 2 kg is raised vertically through 2m, then the work done will be
39.2 J
107 - If a body of mass 10 kg is allowed to fall freely, its weight becomes
zero
108 - If a car moves with a uniform speed of 2 ms-1 in a circle of radius 0.
4 rad. S-1
109 - If a convex lens of focal length f is cut into two identical halves along the lens diameter the focal length of each half is
2f
110 - If a convex lens of large aperture fails to converge the light rays incident on it to a single point, it is said to suffer from
spherical aberration
111 - If an object is placed away from 2f of a converging lens then the image will be
real and inverted
112 - If east, west, north, south, up and down are representing the direction of unit vectors, then east x south has direction along
down
113 - If length of second pendulum becomes four times, then its time period will become
two times
114 - If moon radius is 1600 km and g on its surface is 1.6 ms-2 then the escape velocity on the moon is
50.6 ms-1
115 - If stretching force T of wire increases, then its frequency
increases
116 - If the pressure of a given gas is held constant its density is inversely proportional to its absolute temperature. We can refer it as another statement of
Charles law
117 - If the volume of a gas is held constant and we increase its temperature then
its pressure rises
118 - If velocity is doubled then
momentum increases 2 times and K.E increases 4 time
119 - If we whirl a stone at the end of a string in the vertical circle, it is likely to break when the stone is
at the lowest point
120 - Image of an object 5 mm high is only 1 cm high. Magnification produced by lens is
2
121 - In a clinical thermometer the mercury in the capillary tube does not contract once removed from the patient because
The capillary tube has a small constriction near the bulb
122 - In a plane polarized light
vibration take place in a direction perpendicular to the direction of propagation of light
123 - In an interference pattern
both dark and bright fringes are of equal width
124 - In any measurement the significant figures are
all accurately known digits and the first doubuful digit
125 - In case of a simple pendulum the cause of damping is
drag force of air
126 - In case of planets the necessary acceleration is provided by
Gravitational force
127 - In cricket when a bowler produce reverse swing the ball will move towards
shinning side of the ball
128 - In damped harmonic oscillation which one decreases?
both amplitude and energy
129 - In double slit experiment if one of the two slit is covered then
no interference fringes are observed
130 - In double slit experiment we observe
both interference and diffraction fringes
131 - In going form a denser to rarer medium a ray of light is
bent away form the normal
132 - In monochromatic red light a blue book will probably appear to be
black
133 - In multimode step index fibre the refractive index of core and cladding is
different with refractive index of core higher than cladding
134 - In multiplication and division of measurement
percentage uncertainties are added
135 - In open organ pipe
both even and odd harmonics are present
136 - In optic fiber transmission system __________ are used regenerate the dim light signal.
Repeaters
137 - In optic fiber transmission the repeater are separated through a distance of ______ km in newer system.
100km
138 - In S.H.M. the velocity of a particle is maximum at
mean position
139 - In scientific notation numbers are expressed in
power of ten
140 - In the shadow of a ball the central portion appears bright that happens due to
Diffraction
141 - In vibrating cord the points where the amplitude is maximum, are called
antinodes
142 - In vibratory motion
total energy remain constant
143 - In which process all the heat supplied is converted into work done.
isothermal
144 - In which process entropy remains constant
adiabatic
145 - In which quadrant the two rectangular components of a vector have same sign?
both 1st and 3rd
146 - In which quadrant, only value of tan will be positive?
both 1st and 3rd
147 - In Young double slit experiment, if white light is used
coloured fringes will be seen
148 - Increase in velocity of sound in the air for 1 ?C rise in temperature is
0.61 ms-1
149 - Inertia of an object is quantitative measure of its
mass
150 - Instantaneous and average velocities become equal when body
has zero acceleration
151 - Instrument used to measure blood pressure is called
sphgmomanometer
152 - Irregular flow of fluid is called
turbulent
153 - It is easier to turn a steering wheel with both hands than with a single hand because
couple acts on the wheel
154 - It is possible to distinguish between transverse and longitudinal waves form the property of
polarization
155 - Laminar flow usually occurs at speeds.
low
156 - Laplace found that the alternate compressions and rarefactions produced in sound waves follows
adiabatic law
157 - Least distance of distinct vision
increases with increase in age
158 - Light on passing through a Polaroid is
plane polarized
159 - Light reaches the earth form sun in nearly
8 minutes 30 seconds
160 - Light signals passes through multimode graded index fibre due to
continuous refraction
161 - Longitudinal waves do not exhibit
polarization
162 - Magnification of the astronomical telescope is
fo/fe
163 - Magnifying power of simple microscope
increase with decrease in focal length
164 - Mass attached to a spring executes.
both (a) and (c)
165 - Maximum number of components of a vector may be
infinite
166 - Maximum number of rectangular components are
three
167 - Metabolism is the name of a process in which energy transformation takes place within
Human body
168 - Michelson calculated the speed of light using the instruments
spectrometer
169 - Michelson devised the formula to calculate the speed of light
C = 16fd
170 - Minimum number of communication satellites required to cover the whole carth is
3
171 - ML-1 T-2 is the dimension of
pressure
172 - Momentum depends upon
both mass and velocity of the body
173 - Motorcycle safety helmet extends the time of collision hence decreasing the
impulse
174 - Natural frequency of simple pendulum depends upon
square root of its length
175 - Newton estimated the speed of sound
281m/sec
176 - Newtons laws do not hold good for particles
move with velocity comparable to velocity of light
177 - Normal human body temperature 98.6 Degree F corresponds to
37 Degree C
178 - Null vector is a vector which has
both a and b are correct
179 - Number of significant figures in 0.0173 are
three
180 - Numerical value of Boltzmanns constant is
1.38x10-23JK-1
181 - On a clear day at noon the solar energy reaching the earth is
1 kw/m2
182 - On loading the prong of a tuning form with wax its frequency
decreases
183 - One light year is equal to
9.5x1015m
184 - One mega watt hour is equal to
36 x 108 J
185 - One pico stands for
10 raised to power -12
186 - One radian is equal to
57.3 Degree
187 - One torr is equal to
133.3 Nm2
188 - Optical active crystals rotates the
polarization plane
189 - Petrol engine is a
all the above
190 - Phase of SHM describes
both displacement and direction of motion
191 - Photoelectric effect was given by
Einstein
192 - Preftix deca represents
10 Raised to power 1
193 - Propulsion force of a rocket is
non-conservative force
194 - Proton electron neutron and a particles have same momentum. Which of them have highest K.E?
electron
195 - Radius of geo-stationary orbit from center of earth is nearly
42000km
196 - Random errors can be reduced by
taking mean of several measurement
197 - Rectangular coordinate system is also called
Cartesian coordinate system
198 - S.I unit of frequency is
hertz
199 - Sharpness of resonance is
inversely proportional to damping force
200 - SI unit of coefficient of viscosity is
Kg m-1.S-1
201 - SI unit of torque is
N.m
202 - Silence zone takes place due to
destructive interference
203 - Simple harmonic motion is a type of
vibratory motion
204 - Slope of velocity time graph is
acceleration
205 - Slope of work time graph is equal to
power
206 - Smaller the least count of the instrument more is the measurement
precise
207 - Sound waves do not travel in vacuum because
they require material medium for propagation
208 - Speed of efflux can be determined by applying
Torricellis theorem
209 - Sphygmomanometers measures blood pressure.
dynamically
210 - Standard condition STP refer to a gas at
all of the above
211 - Steradian is the SI unit of
solid angle
212 - Stokes law is applicable if body has ________shape
spherical
213 - Systolic pressure is called
high blood pressure
214 - Taking off rocket can be explained by
Law of conservation of momentum
215 - Temperature is a property which determines
In which direction heat will flow between two systems
216 - Terminal velocity is
uniform and maximum
217 - Terminal velocity of the body is directly proportional to the
square of the diameter of the body
218 - The acceleration in the rocket at any instant is proportional to the nth power of the velocity of the expelled gases. Where the value of n must be?
1
219 - The acceleration of a projection on the diameter for a particle moving along a circle is
w2x
220 - The area enclosed by the curve ABCDA for a Carnot heat engine represents the work done by Carnot engine
during one cycle
221 - The area under the force displacement graph represents
work done
222 - The average power and instantaneous power become equal if work is done at
at uniform rate
223 - The beats frequency (sensible) for a human car is
7 Hz
224 - The blood flow is ____________ flow at disystolic pressure
laminar
225 - The blue colour of the sky is due to
scattering
226 - The collision between two bodies be elastic if bodies are
solid and hard
227 - The consumption of energy by a 60 watt bulb in 2 sec is
120 J
228 - The critical speed of an artificial satellite is
7.9 Kms-1
229 - The cross product i^ x j^ is equal to
k^
230 - The cross product of two vectors is a negative vector when
they are rotated through 270?
231 - The density of human blood is nearly equal to
water
232 - The diameter of a lens is called
aperture
233 - The dimension of force is
MLT-2
234 - The dimension of force is
MLT-2
235 - The dimension of power is
[ML2T-3]
236 - The dimension of torque is
[ML2T-2]
237 - The dimensions of coefficient of visocisity are
ML-1T-1
238 - The direction of a vector in spece is specified by
three angle
239 - The direction of linear velocity of body moving in a circle is
along the tangent
240 - The direction of vector product is given by
right hand rule
241 - The distance between any two consecutive crests or troughs is called
wave length
242 - The distance covered by a body in one complete vibration is 20cm. What is the amplitude of body
5 cm
243 - The distance covered by a body in time t starting from rest is
at2/2
244 - The dot product of force and velocity is
power
245 - The effect of the decrease in pressure with the increase of the speed of fluid in a horizontal pipe is known as
Venturi effect
246 - The electrical signals change into light signals for transmission through optical fibre. A light pulse represent
One (1)
247 - The energy absorbed by a body is ________________ at resonance.
maximum only
248 - The energy of SHM is maximum at
all positions during SHM
249 - The error in measurement may occur due to
due to all reasons in a, b and c
250 - The escape velocity form the earth surface in km S-1 is
1.1 km S-1
251 - The escape velocity of a body in gravitational field of earth is independent of
both its mass and the angle at which it is thrown
252 - The Fahrenheit and centigrade scales agree to
40
253 - The flow of ideal fluid is always
streamline
254 - The force beared by a wall on which water strikes normally at a speed of 10m/sec and at a discharge of 0.0001m3/sec is.
1 N
255 - The frequency of the second pendulum is
0.5 hertz
256 - The function of collimeter in spectrometer is
to produce parallel beams of light
257 - The highest value of escape velocity in solar system is planet
Jupiter
258 - The least distance of distinct vision for a normal eye is
25 cm
259 - The length of second pendulum is
99.2 cm
260 - The locus of all points in a medium having the same phase of vibration is called
wave front
261 - The magnitude of cross product is equal to the dot product between them. The angle between the two vectors is
45 Degree
262 - The magnitude of i^. (j^ x k^) is
1
263 - The minimum distance between an object and its real image in a convex lens is
4f
264 - The normal blood pressure range for an human body is
60 to 140 torr
265 - The normal ear is the most sensitive in the frequency range
2000 to 4000 hertz
266 - The number 76.85 is rounded off upto two significant figures as
77
267 - The number of beats produced per second is equal to
the difference of the frequencies of two tuning forks
268 - The number of categories in which physical quantities are divided are
two
269 - The number of significant figures in 5.400 are
none
270 - The performance of a refrigerator is described by
coefficient of performance
271 - The periodic alternation of sound between maximum and minimum loudness are called
beats
272 - The planet nearest to the earth is
Venus
273 - The power of a concave lens is
negative
274 - The pressure exerted by a column of mercury 76cm high and at 0 Degree C is called
1 atmosphere
275 - The product of frequency and time period is equal to
1
276 - The profile of aeroplane wing which lifts it up is called as
aerofoil profile
277 - The projection of the particle moving in a circle with non-uniform speed executes.
Both (b) and (d)
278 - The purpose of flywheel in the engines is
to smooth out the energy variation
279 - The range of the projectile at 30? and 60? are
equal to each other
280 - The reading on the Fahrenheit scale will be double the reading on the centigrade scale when the temperature on the centigrade scale is
360 Degree C
281 - The relation between horse power and watt is
1 hp = 746 watts
282 - The relation between linear and angular acceleration is
a = a x r
283 - The resultant of two forces of equal magnitudes is also equal to the magnitude of the forces. The angle between the two forces is
120 Degree
284 - The rotational K.E of hoop is equal to the
its translational K.E
285 - The SI unit of force constant is identical with that of
surface tension
286 - The size of one degree of Celsius is equal to
1.8 degrees of Fahrenheit scale
287 - The source of geothermal energy is
all as said in a - b and c
288 - The source of tidal energy is
moon
289 - The span of broad jump depends upon
angle of projection
290 - The speed of sound in hydrogen is __________ time than that in oxygen
Four time
291 - The speed of stationary waves in a stretched string are independent of
both (a) and (c)
292 - The speed of the fluid is maximum in the venturimeter at
throat
293 - The thrust on the rocket in the absence of gravitational force of attraction is
constant
294 - The tides raise the mater in the see roughly in a day
twice
295 - The time period of a second pendulum is
2 seconds
296 - The trajectory (or path) of a projectile is
parabola
297 - The uncertainty in a measurement may occur due to
all given in a , b and c
298 - The unit of entropy is
J/K
299 - The unit of force is _________ and its symbol is __________. Which is the correct pair?
newton, N
300 - The unmber of significant figures in the length of a bar 6200mm measured by meter rod are
four
301 - The value of critical angle for glass is
42 Degree
302 - The velocity of light was determined accurately by
Michelson
303 - The velocity of sound is greatest in
copper
304 - The velocity of the mass attached to a spring is maximum at
mean position
305 - The waveform of S.H.M. is
sine wave
306 - The waves that require a material medium for their propagation are called
mechanical waves
307 - The work done by friction is
negative
308 - The work done in the isochoric process is
zero
309 - There is no noticeable boundary between core and cladding
multi mode graded index fibre
310 - Three coplanar forces acting on a body keep it in equilibrium. They should therefore be
concurrent
311 - Three students measured length of a needle with meter rod and recorded as : (i) 0.2145m (ii) 0.21m (iii) 0.214m Which one is correct record?
only (iii)
312 - Time rate of change of momentum is equal to
force
313 - To reduce the uncertainty in the timing experiment
both a and c
314 - Torque acting on a body determines
angular acceleration
315 - Torque is defined as
all a, b and c are correct
316 - Total distance traveled by bob of simple pendulum in one vibration is equal to
4 x amplitude
317 - Total energy of a body executing S.H.M is directly proportional to
square of amplitude
318 - Total uncertainty, in result obtained from the subtraction of two measurement, is equal to
sum of their absolute uncertainties
319 - Triple point of water is
273.16 Degree C at 0.611 Kpa
320 - Two convex lenses of equal focal length f are placed in contact the resultant focal length of the combination is
f/2
321 - Two fog droplets have radius 2:3 their terminal velocities are
0.17291666667
322 - Two sources of light are coherent if they emit rays of
same wave length with constant phase difference
323 - Two vectors are A = 3i^+2j^ -k^& B = 3i^-2j^ +k^ , then
B is negative vector of A
324 - Ultrasonic have
frequency is greater than 20 kHz
325 - Unit of G is?
Nm2Kg
326 - Unit of power of a lens is
dioptre
327 - Unit vector n^ is along
normal on a surface
328 - Velocity of fluid increases where the pressure is
low
329 - Velocity of sound in vacuum is
Zero
330 - Venturi meter is used to measure
fluid speed
331 - Wavelength of X-rays falling at glancing angle of 30 Degree on a crystal with atmic spacing 2 x 10-10 for the fist order diffraction is
2 x 10-10 m
332 - Waves produced at the surface of water by a pencil executing vibrating motion if held vertically at a frequency of 50Hz are
both (a) and (c)
333 - Waves transmit __________________ from one place to another
energy
334 - We can produce heat by
All of the above
335 - We prefer mercury as a thermometric substance because
All of above
336 - What is outward force acting on a mass of 10 kg when rotating at one end an inelastic string 10m long at speed of 1m/s?
1N
337 - What is the angle of projection for which the range and maximum height become equal?
tan-1 4
338 - What is the angle that the given vector makes with y-axis? A=2 i^+??12 j^
60 Degree
339 - What is the shape of velocity, time graph for constant acceleration?
straight inclined line.
340 - When a body is moving along a circular path it covers a certain angle in a given internal of time. Such type of motion is
angular motion
341 - When a body is whirled in a horizontal circle by means of a string the centripetal force is supplied by
tension in the string
342 - When a body moves in a circle of radius r with linear speed V its centripetal force is
mV2/r
343 - When a body moves in a circle, the angle between its linear velocity and angular velocity is always
90 Degree
344 - When a body moves in a straight line then its displacement coincides with
distance
345 - When a force is parallel to the direction of motion of the body, then work done on the body is
maximum
346 - When arrow is released form its bow, its energy is transformed from
elastic P.E to K.E
347 - When body is in motion, ________ always changes.
its position vector
348 - When body moves with terminal velocity the accereration in the body become
zero
349 - When car takes turn around a curve road, the passengers feel a force acting on them in a direction away from the center of the curve. It is due to
their inertia
350 - When collision between the bodies in a system is inelastic in nature then for system
K.E changes but momentum remain conserve
351 - When crest of one wave falls over the trough of the other wave this phenomenon is known as
destructive interference
352 - When fluid is incompressible then
density of the fluid is constant
353 - When K.E energy of SHM is maximum its
all P.E acceleration and restoring force are zero
354 - When light incident normally on thin film the path difference depends upon
all thickness nature and angle of incidence
355 - When one mirror of a Michelson Interferometer is moved a distance of 0.5 mm we observe 2000 fringes. What will be wavelength of light used?
5000A?
356 - When the amplitude of a wave become double its energy become
four times
357 - When the source of sound moves away form a stationary listener then _________ occurs.
an apparent decrease in frequency
358 - When the speed of a moving body is doubled then
its momentum is doubled
359 - When two bodies move toward each other with constant speeds the distance between them decreases at the rate of 6m / sec. If they move in the same direction the distance between them increases at the rate of 4m/sec. Then their speeds are
5m/s, 1m/s
360 - When two identical traveling waves are superimposed, the velocity of the resultant wave
remains unchanged
361 - When two protons are brought together
P.E. between them increases
362 - When velocity time graph is a straight line parallel to time axis then
acceleration is zero
363 - When we rub a glass rod with a silk cloth then
glass rod acquires positive charge while silk acquires negative charges
364 - Which branch of science plays an important role in the development of technology and engineering?
physics
365 - Which equation is not dimensionally correct?
S=Vt2
366 - Which experiment shows that wavelength of light is smaller than that of sound
Diffraction
367 - Which is not optically active?
water
368 - Which law of motion is also called law of inertia?
1st law
369 - Which of the following is not a correct representation method for prefixes
1000um
370 - Which of the following is not an example of projectile motion.
a gas filled ballon
371 - Which of the following is not conservative force
friction
372 - Which of the following pair has same direction always?
force, acceleration
373 - which of the following pairs does not have identical dimensions ?
mass and moment of inertia
374 - Which of the following properties of molecules of a gas is same for all gases at particular temperature?
kinetic energy
375 - Which of the following types of force can do no work on the particle on which it acts?
centripetal force
376 - Which one dows not work according to resonance?
bulb
377 - Which one is not a branch of physical sciences?
biology
378 - Which one is not a type of dynamic equilibrium?
static equilibrium
379 - Which one is not an example of adiabatic process ?
conversion of water into ice in refrigerator
380 - Which one is the correct relation for fundamental frequency of open and closed pipe?
fopen = 2 fclosed
381 - Which one is the correct representation of the unit of pressure?
newton/meter2
382 - Which one is the derived quantity in SI units?
electric charge
383 - Which one is the dimensionally correct equation?
S=Vit+1/2at2
384 - Which one is the highest power multiple?
giga
385 - Which one is true for internal energy?
All are correct
386 - Which one of the following cannot be polarized?
sound waves
387 - Which one of the following is nearly monochromatic light ?
light form sodium lamp
388 - Which one of the following properties of light does not change with the nature of the medium?
frequency
389 - Which one type of fibre is more suitable for transmission of signals in which white light is used ?
multi mode graded index fibre
390 - Which phenomena can be applied to estimate the velocity of star with respect to earth
Dopplers effect
391 - Which quantity is a state function
internal energy
392 - Which shows the correct relation between time of flight T and maximum height H?
H=gT2/8
393 - Who discovered the inverse square law for gravity?
Newtons
394 - Why Ballistic missile fails in some circumstances of precision.
due to air resistance
395 - Work done by the force of friction is
always negative
396 - Work done by variable force is determine by dividing
displacement into small interval
397 - Work done on the body equals to the
change in its K.E and change in its P.E
398 - Work done will be maximum if the angle between the force F and displacement d is
0 Degree
399 - Work has the dimension as that of same as that of
torque
400 - Zero error of the instrument is a type of
systematic error
Pages
No comments:
Post a Comment
Your Valued Comments Help us to improve our site. Thanks