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

When a mass 'm' is pulled slowly, the spring stretches by an amount xo, then the work done will be

Question # 2

When a body moves to and fro motion, this type of motion is called

Question # 3

The damping depends upon the

Question # 4

Time period of simple pendulum is independent of

Question # 5

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

Question # 6

Crests and troughs are formed in:

Question # 7

The wave motion set up in any medium depends upon:

Question # 8

The expression for restoring force is

Question # 9

Associated with the motion of a driven harmonic oscillator, there is a very striking phenomenon, know as

Question # 10

Which one is not produced by sound waves in air?

Question # 11

Example of progressive wave is

Question # 12

The velocity of sound is greatest in

Question # 13

The waves produced in a microwave oven have frequency

Question # 14

Si units of time period is

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 In a resonance situation the amplitude of the motion may become extra ordinarily large, if
A. the driving force is large
B. the driving force is zero
C. the driving force may be feeble
D. all of them
2 Laplace formula is derived from
A. Isothermal change
B. Adiabatic change
C. Isobaric change
D. None of these
3 Example of progressive wave is
A. transverse waves
B. longitudinal waves
C. both of them
D. none of them
4 The velocity of sound in air depends upon
A. Density and elasticity of gas
B. Pressure
C. Wavelength
D. Amplitude and frequency of sound
5 If two waves of length 50 cm and 51 cm produced 12 beats per second, the velocity of sound is
A. 360 m/s
B. 306 m/s
C. 331 m/s
D. 340 ms
6 Decibel is unit of
A. Intensity of light
B. x-ray radiation capacity
C. sound loudness
D. Energy of radiation
7 Which one is not produced by sound waves in air?
A. Polarization
B. Diffraction
C. Refraction
D. Reflection
8 One complete round trip of the body about its mean position is called
A. displacement
B. vibration
C. a complete motion
D. an acceleration
9 Example of vibratory motion is
A. mass suspended from a spring
B. a bob of simple pendulum
C. mass attached to a spring placed
D. all of them
10 In the resonance condition, the amplitude of the oscillator becomes
A. very large
B. very small
C. zero
D. any one of them

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