ECAT Pre Computer Science Chapter 8 MCQ Test With Answer

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 production of beats by 2 waves of same amplitude and nearly same frequency, the maximum intensity to each of the constituent waves is

Question # 2

The vibrations of factory floor caused by the running of heavy machinery is an example of

Question # 3

The process in which energy is dissipated from the oscillating system is known as

Question # 4

Mechanical waves on the surface of a liquid are

Question # 5

In a resonance situation the amplitude of the motion may become extra ordinarily large, if

Question # 6

Crests and troughs are formed in:

Question # 7

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

Question # 8

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

Question # 9

The bob of a simple pendulum is suspended by

Question # 10

Acceleration of the mass at any instant is given by

Question # 11

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

Question # 12

The ratio of velocity of sound in air at 4 atm pressure and that at 1 atm pressure would be

Question # 13

Si units of time period is

Question # 14

Wave disturbances may also come in a concentrated bundle, like shock wave from an aeroplane flying at

Question # 15

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

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 Such oscillations in which the amplitude decreases steadily with time, are called
A. resonance
B. force oscillations
C. large oscillations
D. damped oscillations
2 The velocity of sound in air not effected by changes in
A. Moisture contents in air
B. Temperature of air
C. The atmosphere pressure
D. The composition of air
3 Which of the following is an example of a S.H.M?
A. motion of a projectile
B. motion of a train along a circular path
C. motion of swing
D. electrons revolving sound the nucleus
4 The distance covered by the wave in one second is:
A. Wave number
B. Wave length
C. Frequency
D. Wave speed
5 The distance covered by the wave during one period is called its:
A. Wave number
B. Frequency
C. Wavelength
D. Time period
6 Longitudinal waves are also called:
A. Congressional waves
B. Transverse waves
C. Radio waves
D. None of them
7 transverse wave motion is possible in:
A. Air
B. A mixture of NH3and O2
C. Strings
D. All of these
8 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
9 For transmission of both transverse and longitudinal waves, we can use:
A. Solid
B. Gas
C. Plasma
D. None of these
10 The waves which propagate through the oscillations of material particles are known as:
A. Mechanical waves
B. Electromagnetic waves
C. Any of them
D. None of them

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