ECAT Pre Computer Science Chapter 8 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 8 Waves

Try The MCQ's Test For ECAT Physics Chapter 8 Waves

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ECAT Physics Chapter 8 Waves

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Question # 1

If the amplitude of sound is doubled and the frequency reduced to one-fourth, the intensity of sound at the same point will be

Question # 2

The instantaneous velocity of a body moving along a circle is directed

Question # 3

The distance covered by the wave during one period is called its:

Question # 4

If F=0.04 N and X=4 cm then K=

Question # 5

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

Question # 6

Of the following, the option ______ reminds of longitudinal waves.

Question # 7

When a body is performing S.H.M., its acceleration is

Question # 8

The restoring force always directed towards the

Question # 9

When the bob of simple pendulum is at mean position, its K.E will be

Question # 10

Which one of the following could be the frequency of ultraviolet radiation?

Question # 11

SI unit of wave length is:

Question # 12

In the same medium, velocity of the wave:

Question # 13

Laplace formula is derived from

Question # 14

If we increase the length of a simple pendulum four times, its time period will become

Question # 15

The frequency of free vibrations is known as

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 Which one of the following elasticizes is possessed by fluids:
A. Young's elastic modulus (length)
B. Bulk elastic modulus (volume)
C. Modulus of rigidity (shape)
D. None of these
2 The example of mechanical wave is
A. waves in ropes
B. waves on water surface
C. waves in air
D. all of them
3 Energy is dissipated and consequently the energy mass system do not oscillate indefinitely because of
A. very small energy
B. very large energy
C. frictional forces
D. acceleration due to gravity
4 Progressive waves of frequency 300 Hz are superimposed in produced a system of stationary waves in which adjacent nodes are 1.5 m apart. What is the speed of the progressive waves?
A. 100 ms-1
B. 200 ms-1
C. 450 ms-1
D. 900 ms-1
5 Which of the following does not exhibit S.H.M?
A. a plucked violin string
B. a mass attached to a spring
C. a train shunting between two terminals
D. a simple pendulum
6 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
7 Laplace formula is derived from
A. Isothermal change
B. Adiabatic change
C. Isobaric change
D. None of these
8 The damping depends upon the
A. amplitude
B. sharpness
C. both of them
D. none of them
9 If a wave can be polarized, it must be
A. An electromagnetic wave
B. A longitudinal wave
C. A progressive wave
D. A transverse wave
10 When the particles of the medium vibrate about their mean position, along the direction of the motion of waves, then the waves are called:
A. Longitudinal waves
B. Transverse waves
C. Water waves
D. Complex waves

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