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

The square of 0.4 is:

Question # 2

While describing the motion of a simple pendulum, the frictional effects are

Question # 3

A traveling wave has a shape of:

Question # 4

transverse wave motion is possible in:

Question # 5

Resonance occurs when one of the natural frequencies of vibration of the forced or driven harmonic oscillator

Question # 6

The damping depends upon the

Question # 7

The wave motion set up in any medium depends upon:

Question # 8

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?

Question # 9

Which one of the following wave motions is transverse:

Question # 10

The speed of sound in a medium depends on

Question # 11

Smaller the damping, the resonance will be

Question # 12

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 # 13

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

Question # 14

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

Question # 15

A string is stretched between two points and is plucked at right angles to its length, the vibration produced is:

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 An object undergoes S.H.M has maximum speed when its displacement from the mean position is
A. maximum
B. zero
C. half of the maximum value
D. one third of the maximum value
2 Example of progressive wave is
A. transverse waves
B. longitudinal waves
C. both of them
D. none of them
3 Laplace formula is derived from
A. Isothermal change
B. Adiabatic change
C. Isobaric change
D. None of these
4 If the time period a simple pendulum is 2 s, its frequency would be
A. 2 Hz
B. 1.5 Hz
C. 1.0 Hz
D. 0.5 Hz
5 The expression for restoring force is
A. F=ma
B. F=kx
C. F= -kx
D. Kx=ma
6 As the bob of the pendulum moves to and fro which of the force is experienced by the bob
A. its weight
B. tension in the string
C. viscous drag force by air
D. all of them
7 Which one of the following wave motions is transverse:
A. Wave motion produced in water when a piece of stone is thrown into it
B. Pulling of weight hanging vertically with a spiral spring
C. Both of these
D. None of these
8 If the external driving force is periodic with a period compareable to the natural period of the oscillator, then we get
A. diffraction
B. beat
C. interference
D. resonance
9 When a mass 'm' is pulled slowly, the spring stretches by an amount x0,then the average force would be
A. F= Kx0
B. F=1/2Kx0
C. F=2Kx0
D. F=4Kx0
10 The waves which propagate by the collision of material particles are known as
A. e.m. waves
B. mechanical waves
C. light waves
D. microwaves

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