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

As the bob of the pendulum moves to and fro which of the force is experienced by the bob

Question # 2

When half of the cycle of a body executing S.H.M is completed, then the phase of the vibration will be

Question # 3

Decibel is unit of

Question # 4

A traveling wave has a shape of:

Question # 5

Acceleration of the mass at any instant is given by

Question # 6

The velocity of sound is greatest in

Question # 7

The resonance will be sharp, if the amplitude decreases rapidly at a frequency

Question # 8

The waves which propagate by the collision of material particles are known as

Question # 9

To hear a clear echo, the reflecting surface must be at a minimum distance of

Question # 10

Transverse waves can be set up:

Question # 11

The vibratory motion of a body whose magnitude of acceleration is directly proportional to the magnitude of its displacement and is always directed towards the equilibrium position is called

Question # 12

What is frequency of radio waves transmitted by a station, if the wavelength of those waves is 300 m?

Question # 13

When a wave is travels from one place to another, it transfers:

Question # 14

If the length of second pendulum becomes four times then its time period will become

Question # 15

SI unit of frequency is

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 In compressional wave,the layer of medium having reduced pressure is called:
A. Compression
B. Elasticity
C. Node
D. Rarefaction
2 The expression of Hook's law is
A. F=ma
B. F=kx
C. F= -kx
D. -kx=ma
3 When the bob of simple pendulum is at extreme position, its K.E. will be
A. maximum
B. minimum
C. zero
D. all of them
4 The frequency of free vibrations is known as
A. free frequency
B. forced frequency
C. natural frequency
D. un-natural frequency
5 Example of progressive wave is
A. transverse waves
B. longitudinal waves
C. both of them
D. none of them
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 Longitudinal waves are also called:
A. Congressional waves
B. Transverse waves
C. Radio waves
D. None of them
8 The speed of sound in a medium depends on
A. The elastic property but not on the inertia property
B. The inertia property but not on the elastic property
C. The elastic property as well as the inertia property
D. Neither the elastic property nor the inertia property
9 Which of the following is not mechanical wave?
A. Sound wave
B. Light wave
C.
wave produced in spring
D. None of them
10 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

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