ECAT Pre Computer Science Chapter 8 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 8 Waves

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ECAT Physics Chapter 8 Waves

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Question # 1

When temperature increase, the frequency of a tuning fork

Question # 2

SI unit of wave length is:

Question # 3

Time period of simple pendulum is independent of

Question # 4

The velocity of sound is greatest in

Question # 5

Velocity of sound in vacuum (in m/s) is

Question # 6

The damping depends upon the

Question # 7

transverse wave motion is possible in:

Question # 8

In transverse waves, the individual particles of the medium move:

Question # 9

Longitudinal waves are also called:

Question # 10

The bob of a simple pendulum is suspended by

Question # 11

Ultra-violet rays differ from X-rays in that they

Question # 12

Which of the following changes at an antinode in a stationary wave?

Question # 13

The ratio of velocity of sound in air at 4 atm pressure and that at 1 atm pressure would be

Question # 14

Mechanical waves on the surface of a liquid are

Question # 15

If two waves of length 50 cm and 51 cm produced 12 beats per second, the velocity of sound is

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 A weakly damped system has fairly
A. sharp resonance curve
B. flat resonance curve
C. both of them
D. none of them
2 Time period of a simple pendulum depends upon the
A. length of the pendulum
B. acceleration due to gravity
C. none of them
D. both of them
3 In stationary waves
A. Energy is uniformly distributed
B. Energy is minimum at nodes and maximum at antinodes
C. Energy is maximum at nodes and minimum at antidotes
D. Alternating maximum and minimum energy producing at nodes and antinodes
4 Si units of time period is
A. second
B. hertz
C. revolution
D. vibration/sec
5 The waves in which the particles of the medium are displaced in a direction perpendicular to the direction of propagation of waves are known as
A. longitudinal waves
B. transverse waves
C. non-mechanical waves
D. none of them
6 Which one of the following could be the frequency of ultraviolet radiation?
A. 1.0 x 106Hz
B. 1.0 x 109Hz
C. 1.0 x 1012Hz
D. 1.0 x 1015Hz
7 The force which opposes the applied force producing the displacement in the spring is called
A. restoring force
B. periodic force
C. centripetal force
D. resistive force
8 Smaller the damping, the resonance will be
A. more flat
B. more sharp
C. both of them
D. none of them
9 The waves produced in a microwave oven have wavelength.
A. 12 mm
B. 12 cm
C. 12 m
D. 12 mm
10 If two waves of length 50 cm and 51 cm produced 12 beats per second, the velocity of sound is
A. 360 m/s
B. 306 m/s
C. 331 m/s
D. 340 ms

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