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 speed of sound in a medium depends on

Question # 2

At a certain instant a stationary transverse wave is found to have maximum kinetic energy. The appearance of string of that instant is

Question # 3

The wave motion set up in any medium depends upon:

Question # 4

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

Question # 5

In case of mechanical waves, we study the motion of

Question # 6

Energy is dissipated and consequently the energy mass system do not oscillate indefinitely because of

Question # 7

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

Question # 8

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 # 9

SI unit of wave length is:

Question # 10

The distance covered by the wave in one second is:

Question # 11

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

Question # 12

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

Question # 13

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

Question # 14

Smaller the damping, the resonance will be

Question # 15

If the length of a simple pendulum is 0.25 m its time period would be

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 Resonance occurs when one of the natural frequencies of vibration of the forced or driven harmonic oscillator
A. greater than the frequency of applied force
B. equal to the frequency of applied force
C. less than the frequency of applied force
D. all of them
2 The damping depends upon the
A. amplitude
B. sharpness
C. both of them
D. none of them
3 The expression of Hook's law is
A. F=ma
B. F=kx
C. F= -kx
D. -kx=ma
4 Which of the following changes at an antinode in a stationary wave?
A. Density only
B. Pressure only
C. Both pressure and density
D. Neither pressure nor density
5 If the mass of the simple pendulum becomes double, its time period
A. increase
B. decreases
C. remains constant
D. none of them
6 The instantaneous velocity of a body moving along a circle is directed
A. along the radius
B. along the tangent
C. away from the circle
D. none of them
7 In the resonance condition, the amplitude of the oscillator becomes
A. very large
B. very small
C. zero
D. any one of them
8 When an oscillatory motion repeats itself, then this type of motion is called
A. vibratory motion
B. constant motion
C. fixed motion
D. periodic motion
9 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
10 Velocity of sound in vacuum (in m/s) is
A. 330
B. 1000
C. 156
D. 0

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