48 QUESTIONS FOR ENTRANCE EXAM FORM PHYSICS | VERY IMPORTANT
CLASS : 11
These are Probable Question asked in the Entrance Examination Held in renowned colleges(St. Xaviers, Budhanilkantha, SOS,..etc) in
1. Total internal
reflection can occur when lights passes from:
(a) a denser to
rarer medium
(b) a rarer to denser
medium
(c) one medium to
another of equal refractive index
(d) medium to another of equal
absorption coefficient
2. Sound energy is
converted into electrical energy in a:
(a) loud
speaker (b)
microphone
(c) sonometer (d)
earphone
3. The numerical
value of average velocity to average speed
is:
(a) always less
than one (b) always greater than one (c)
always equal to one (d) equal or less than one
4. Newton’s
first law of motion gives the concept
of:
(a)
energy (b)
work (c)
inertia (d) momentum
5. The mass of a
particle at the centre of the earth is:
(a)
zero (b)
slightly more than at the poles (c)
infinite (d) same as at the
poles
6. The rear view
mirror in a car is:
(a) plane
mirror (b)
concave mirror (c) convex
mirror (d)
None
7. A convex mirror
gives an image which is:
(a) real and
inverted (b) virtual and
inverted (c) virtual and
erected (d)
virtual and magnified
8. A boat full of
scrap iron is floating on water in a lake. If all the iron is dropped into
water the water level will:
(a) go
up (b) remain the
same (c) rise very high
(d) fall down
9. The velocity of
electromagnetic wave is:
(a) 2 ×108m/s (b) 3 ×1011cm/s
(c) 332m/s (d) 3 ×108m/s
10. An object is
projected upwards with a velocity of 100 m/s. It will strike the ground in
about:
(a) 5s
(b) 10s
(c) 20s (d)
15s
11. An iron ball
and a wooden ball of the same radius are released from the same height h in
vacuum. The time taken by both of them to reach the ground
are:
(a) roughly
equal (b) zero
(c) exactly equal
(d) unequal
12. When the
resultant force on a body is not zero it
produces:
(a) linear
acceleration (b) angular
acceleration (c) constant
velocity (d) inertia
13. The most
characteristic property of a liquid is:
(a) elasticity
(b) fluidity (c)
formlessness (d) volume
conservation
14. The velocity of
sound is largest
in:
(a) air
(b) water (c) steel
rod (d) kerosene oil
15. A bulb is
marked 110W-220V. The resistance of the filament
is:
(a) 110
ohm (b) 220 ohm (c) 440
ohm (d) 2 ohm
16. A rocket works
on the principle of:
(a) conservation of
mass
(b) conservation of
energy
(c) conservation of
linear momentum
(d) conservation of
angular momentum
17. Of the
following which is not a scalar quantity?
(a)
time (b)
momentum (c)
volume (d) density
18. Pressure
exerted by a liquid depends upon:
(a)
density (b) surface
tension (c) viscosity
(d) buoyancy
19. Principle of
transmission of pressure is stated
by:
(a) Charle’s
law
(b) Newton’s law (c) Pascal’s
law (d) Boyle’s law
20. Water
reservoirs are made thicker at the bottom rather than at the top because:
(a) water is denser
at the bottom
(b) pressure is
greater at the bottom
(c) P.E. of water
is greater at the bottom
(d) K.E. of water
is greater at the bottom
21. Atmospheric
pressure is measured by using:
(a)
hydrometer
(b) thermometer
(c) calorimeter (d) barometer
22. A piece of ice
is floating in jar containing water. When the ice melts then the level of (a)
water: (b)
rises (c)
falls (d)
remains unchanged
23. Which one of
the following would a hydrogen balloon find easiest to
lift?
(a) 1 kg of
steel (b) 1 kg of
lightly packed feather (c) 1 kg of
water (d) all the same
24. A conical
vessel of vertical height h filled with a liquid of density d rests on its
base. If g is the acceleration due of gravity, the pressure at the point on the
base is:
(a) 1/3
dgh (b) 1/2 dgh
(d) 2/3 dgh (e)
dgh
25. A wooden cube
just floats inside the water when a 200 gm mass is placed on it. When the mass
is removed the cube is 2 cm above the water level. The side of the cube
is:
(a) 5
cm (b) 10
cm (c) 15
cm (d) 20 cm
26. The walls of
the music concert halls:
(a) amplify
sound (b) refract
sound (c) produce reverberation
(d) absorb sound
27. A body of
volume 100 cc immersed completely in water contained in a jar. The weight of
water and jar before immersion of the body was 700 gm. After immersion, the
weight of water and jar will be:
(a) 500
gm (b) 700 gm
(c) 100 gm (d) 800 gm
28. The internal
energy of a gas molecule of an ideal gas depends
on:
(a) pressure
alone (b) volume
alone (c) temperature
alone (d) none
29. Sound when a
tuning fork vibrates the waves produced in the fork are:
(a)
longitudinal
(b) transverse (c)
progressive (d)
stationary
30. Which one of
the following characteristics of the sound is affected by the change in
temperature?
(a)
wavelength
(b)
amplitude (c)
intensity (d) frequency
31. A man is
standing between the two cliffs. On clapping his hands a series of echoes are
heard at the intervals of 1.5 sec. If the speed of sound is 350 m/s the
distance between two cliffs
is:
(a) 175
m (b) 350
m (c) 525
m (d) 700 m
32. The distinction
between the voice of a man and that of woman is possible because of difference
between:
(a) loudness of two
sounds (b) intensity of two sounds
(c) pitch of two sounds
(d) quality of two sounds
33. The speed of
sound in air is 350 m/s. The frequency of the tuning fork that produces sound
wave of wavelength 7x10-3 m in air is:
(a) 4000
Hz (b) 4200 Hz
(c) 4500 Hz (d) 50000 Hz
34. The factor that
helps to recognize a person by his voice
is:
(a)
loudness (b)
pitch (c)
intensity (d) quality
35. Decibel is the
unit of:
(a) light
intensity (b)
sound intensity (c) heat
intensity (d) none of above
36. What causes
reverberation?
(a)
reflection (b)
refraction
(c) interference (d)
absorption
37. In an empty
hall, we hear sounds louder than in a hall packed with people. It is because
of:
(a) less absorption
of sound (b) doppler
effect (c) refraction of
sound (d) change in
speed of sound
38. The
weightlessness is experienced while orbiting the earth in a spaceship is the
result of:
(a) centripetal
acceleration (b) zero acceleration due to
gravity (c) inertia (d)
none
39. The escape
velocity of a projectile from the earth is
approximately:
(a) 7
km/s (b) 11.2 km/s
(d) 1.1 km/s (e) 11.2 m/s
40. An object is
projected upwards with a velocity of 100 m/s. It will strike the ground in
about:
(a) 5s
(b) 10s
(c) 20s (d)
15s
41. A stone dropped
from a bridge reaches the bottom in 4s. The height of the bridge
is:
(a) 78.4
m (b) 64
ft (c) 2000
cm (d) 260 m
42. A ball drawn
vertically upwards with an initial velocity of 19.6 m/s returns in 4s. The
maximum height attained by the ball is:
(a)
19.6m (b)
26.7m (c)
9.8m (d) none
43. Ball pen
functions on the principle of:
(a)
viscosity (b) Boyle’s
law (c) gravitational force
(c) surface tension
44.Sound waves in
air are:
(a) transverse
wave (b) longitudinal wave (b) may be both
types (c) none
45. Which is used
in measurement of high temperature:
(a) mercury
thermometer (b) platinum
resistance thermometer (c) thermo electric
pyrometers (d) none
46. The thermal
capacity of 40gm of aluminum of specific heat 0.2 cal/gm0C
is:
(a) 0.4 cal/oC
(b) 160 cal/oC (c) 8 cal/oC (d) 4000 cal/oC
47. Mercury
thermometer can be used to measure temperature up to:
(a) 360 oC (b)
500 oC (c) 212 oC (c) 100 oC
48. When 20 gm of
water is heated from 10 oC to 15 oC , the required energy in joule is:
(a) 420
(b) 22
(c) 44 (d) 1000
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