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

A stationary sound wave has frequency 165 Hz (speed of sound in air = 330 m/s) then distance between two consecutive nodes is

Question # 2

When the particles of the medium vibrate about their mean position, along the direction of the motion of waves, then the waves are called:

Question # 3

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

Question # 4

It two waves of amplitude 'a' produce a resultant wave of amplitude a, then the phase difference between them will be

Question # 5

The waves which propagate out in space due to oscillation of electric and magnetic fields are known as

Question # 6

Which of the following is the longitudinal waves?

Question # 7

When an oscillatory motion repeats itself, then this type of motion is called

Question # 8

The waves moving from a sitar to a listener in air are

Question # 9

Shock absorber of the car is an example of

Question # 10

The bob of a simple pendulum is suspended by

Question # 11

Through which character we can distinguish the light waves from sound waves

Question # 12

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

Question # 13

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

Question # 14

When two waves with same frequency and constant phase difference phase difference interfere

Question # 15

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

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 The damping depends upon the
A. amplitude
B. sharpness
C. both of them
D. none of them
2 When the bob of simple pendulum is at extreme position, its K.E. will be
A. maximum
B. minimum
C. zero
D. all of them
3 Longitudinal waves are also called:
A. Congressional waves
B. Transverse waves
C. Radio waves
D. None of them
4 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
A. rotatory motion
B. motion under gravity
C. angular motion
D. simple harmonic motion
5 If we increase the length of a simple pendulum four times, its time period will become
A. 2 times
B. 3 times
C. 4 times
D. 6 times
6 A simple pendulum consists of a
A. small light bob
B. small heavy bob
C. big light bob
D. big heavy bob
7 A physical system under going forced vibrations is known as
A. Simple harmonic oscillator
B. Compound harmonic oscillator
C. Physical harmonic oscillator
D. driven harmonic oscillator
8 The velocity of sound at same temperature is maximum in
A. H2
B. N2
C. O2
D. NH3
9 The number of vibrating body at any instant from its equilibrium position is called
A. displacement
B. frequency
C. amplitude
D. time period
10 When two waves with same frequency and constant phase difference phase difference interfere
A. There is a gain of energy
B. There is a loss of energy
C. The energy is redistributed and the distribution changes with time
D. The energy is redistributed and the distribution remains constant with time

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