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 velocity of sound at same temperature is maximum in

Question # 2

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

Question # 3

Velocity of sound in a diatomic as is 300 m/sec. what is its rms velocity?

Question # 4

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

Question # 5

When a body is pulled away from its rest or equilibrium position and then released, the body oscillates due to

Question # 6

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

Question # 7

The expression of Hook's law is

Question # 8

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

Question # 9

A string is stretched between two points and is plucked at right angles to its length, the vibration produced is:

Question # 10

Fluids can transmit:

Question # 11

Progressive waves of frequency 300 Hz are superimposed in produced a system of stationary waves in which adjacent nodes are 1.5 m apart. What is the speed of the progressive waves?

Question # 12

The damping depends upon the

Question # 13

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

Question # 14

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 # 15

The square of 0.4 is:

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 SI unit of wave length is:
A. Kilometer
B. Metre
C. Centimetre
D. Hertz
2 The time required to complete on vibration is called
A. frequency
B. total time
C. time period
D. velocity
3 The portion of the water above its mean level forms a:
A. Crest
B. Trough
C. Both A and B
D. None of these
4 If a simple pendulum is shifted from karachi to K-2 cliff, its time period
A. remains the same
B. decreases
C. increases
D. none of them
5 Which of the following is the longitudinal waves?
A. Sound waves
B. Waves on plucked string
C. Water waves
D. Light waves
6 The phase determines the
A. displacement
B. amplitude
C. frequency
D. state of motion of vibrating body
7 Wave disturbances may also come in a concentrated bundle, like shock wave from an aeroplane flying at
A. subsonic speed
B. sonic speed
C. super sonic speed
D. any one of them
8 The wave form of S.H.M will be
A. square wave
B. sine wave
C. rectified wave
D. saw-tooth wave
9 Which one of the following wave motions is transverse:
A. Wave motion produced in water when a piece of stone is thrown into it
B. Pulling of weight hanging vertically with a spiral spring
C. Both of these
D. None of these
10 If the time period a simple pendulum is 2 s, its frequency would be
A. 2 Hz
B. 1.5 Hz
C. 1.0 Hz
D. 0.5 Hz

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