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

In the formula for finding the speed of waves in the spring, unit of m in SIn units is:

Question # 2

A simple pendulum consists of a

Question # 3

When sound waves travel from air to water which of these remains constant?

Question # 4

The velocity of sound in air not effected by changes in

Question # 5

Which one of the following is an example of resonance

Question # 6

A weakly damped system has fairly

Question # 7

The maximum displacement of a body on either side of its equilibrium position is called

Question # 8

If the displacement of a body executing S.H.M is plotted against time, then the curve is known as

Question # 9

The waves which propagate out in space due to oscillation of electric and magnetic fields are known as

Question # 10

A wave, which transfer energy by moving away from the source of disturbance is called a

Question # 11

If the external driving force is periodic with a period compareable to the natural period of the oscillator, then we get

Question # 12

When two waves with same frequency and constant phase difference phase difference interfere

Question # 13

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 # 14

An object undergoes S.H.M has maximum speed when its displacement from the mean position is

Question # 15

A swing has

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 Velocity of sound in vacuum (in m/s) is
A. 330
B. 1000
C. 156
D. 0
2 The natural frequency of a pendulum which is vibrating freely, depends upon its
A. mass
B. length
C. material
D. all of them
3 For a body executing S. H. M, its
A. momentum remains constant
B. potential energy remains constant
C. kinetic energy remains constant
D. total energy remains constant
4 If the length of second pendulum becomes four times then its time period will become
A. Four time
B. Two times
C. Six times
D. Eight times
5 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
A. rotatory motion
B. motion under gravity
C. angular motion
D. simple harmonic motion
6 With the propagation of a longitudinal wave through a material medium, the quantities transmitted in the propagation direction are
A. Energy, momentum and mass
B. Energy
C. Energy and mass
D. Energy and linear momentum
7 The expression for restoring force is
A. F=ma
B. F=kx
C. F= -kx
D. Kx=ma
8 If the length of a simple pendulum is 0.25 m its time period would be
A. 1.0 s
B. 2.0 s
C. 3.0 s
D. 4.0 s
9 The distance covered by the wave during one period is called its:
A. Wave number
B. Frequency
C. Wavelength
D. Time period
10 In the production of beats by 2 waves of same amplitude and nearly same frequency, the maximum intensity to each of the constituent waves is
A. Same
B. 2 times
C. 4 times
D. 8 times

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