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

If the mass of the simple pendulum becomes double, its time period

Question # 2

Mechanical waves on the surface of a liquid are

Question # 3

The speed of sound in a medium depends on

Question # 4

transverse wave motion is possible in:

Question # 5

The portion of the water above its mean level forms a:

Question # 6

Example of vibratory motion is

Question # 7

The phase determines the

Question # 8

Which of the following is an example of a S.H.M?

Question # 9

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 # 10

The frequency of free vibrations is known as

Question # 11

Which one is not produced by sound waves in air?

Question # 12

If a freely oscillating system is subjected to an external force, then

Question # 13

The waves produced in a microwave oven have wavelength.

Question # 14

The expression for restoring force is

Question # 15

Which one of the following is an example of resonance

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 In the resonance condition, the amplitude of the oscillator becomes
A. very large
B. very small
C. zero
D. any one of them
2 Mechanical waves on the surface of a liquid are
A. Transverse
B. Longitudinal
C. Torsional
D. both transverse and longitudinal
3 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
4 The force which opposes the applied force producing the displacement in the spring is called
A. restoring force
B. periodic force
C. centripetal force
D. resistive force
5 If a wave can be polarized, it must be
A. An electromagnetic wave
B. A longitudinal wave
C. A progressive wave
D. A transverse wave
6 It is possible to recognize a person by hearing his voice even if he is hidden behind a solid wall. This is due to the fact that his voice
A. Has a definite pitch
B. Has a definite quality
C. Has a definite capacity
D. Can penetrate the wall
7 Which of the following is not mechanical wave?
A. Sound wave
B. Light wave
C.
wave produced in spring
D. None of them
8 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
9 If the amplitude of sound is doubled and the frequency reduced to one-fourth, the intensity of sound at the same point will be
A. Increasing by a factor of 2
B. Decreasing by a factor of 2
C. Decreasing by a factor of 4
D. Unchanged
10 SI unit of frequency is
A. second
B. hertz
C. revolution
D. vibrations/sec

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