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 case of mechanical waves, we study the motion of

Question # 2

Waves transport energy

Question # 3

Which of the following medium/media can transmit both transverse and longitudinal waves:

Question # 4

If the amplitude of sound is doubled and the frequency reduced to one-fourth, the intensity of sound at the same point will be

Question # 5

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

Question # 6

The example of mechanical wave is

Question # 7

When the bob of simple pendulum is at mean position, its K.E will be

Question # 8

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

Question # 9

In compressional wave,the layer of medium having reduced pressure is called:

Question # 10

When a mass 'm' is pulled slowly, the spring stretches by an amount x0,then the average force would be

Question # 11

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

Question # 12

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

Question # 13

Which one of the following could be the frequency of ultraviolet radiation?

Question # 14

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

Question # 15

The characteristic of a body executing S.H.M is that its acceleration is

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 The loudness and pitch of a sound note depends on
A. Intensity and velocity
B. Frequency and velocity
C. Intensity and frequency
D. Frequency and number of harmonic
2 Laplace formula is derived from
A. Isothermal change
B. Adiabatic change
C. Isobaric change
D. None of these
3 If the displacement of a body executing S.H.M is plotted against time, then the curve is known as
A. frequency of S.H.M
B. period of S.H.M
C. wave form
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 The wave form of S.H.M will be
A. square wave
B. sine wave
C. rectified wave
D. saw-tooth wave
6 The process in which energy is dissipated from the oscillating system is known as
A. resonance
B. interference
C. diffraction
D. damping
7 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
8 The waves which propagate out in space due to oscillation of electric and magnetic fields are known as
A. e.m. waves
B. mechanical waves
C. sound waves
D. water waves
9 SI unit of frequency is
A. second
B. hertz
C. revolution
D. vibrations/sec
10 When a body is performing S.H.M., its acceleration is
A. inversely proportional to the displacement
B. directly proportional to the applied force
C. directly proportional to the amplitude
D. directly proportional to the displacement but in opposite direction

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