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 wave motion set up in any medium depends upon:

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

Which of the following changes at an antinode in a stationary wave?

Question # 4

The expression of Hook's law is

Question # 5

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

Question # 6

Ultra-violet rays differ from X-rays in that they

Question # 7

The frequency of free vibrations is known as

Question # 8

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

Question # 9

Which of the following is the longitudinal waves?

Question # 10

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

Question # 11

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

Question # 12

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 # 13

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

Question # 14

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

Question # 15

While describing the motion of a simple pendulum, the frictional effects are

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 When a wave is travels from one place to another, it transfers:
A. Matter
B. Energy
C. Momentum
D. Both B and C
2 A string is stretched between two points and is plucked at right angles to its length, the vibration produced is:
A. Longitudinal wave
B. Transverse wave
C. No vibration at all
D. None of them
3 In the formula for finding the speed of waves in the spring, unit of m in SIn units is:
A. kg
B. kg-meter
C. kg/meter
D. Meter/kg
4 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
5 The velocity of sound is greatest in
A. Water
B. Air
C. Vacuum
D. Metal
6 In solids, only following type/s of wave can travel:
A. Transverse
B. Longitudinal
C. Both A and B
D. None of them
7 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
8 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
9 In stationary waves
A. Energy is uniformly distributed
B. Energy is minimum at nodes and maximum at antinodes
C. Energy is maximum at nodes and minimum at antidotes
D. Alternating maximum and minimum energy producing at nodes and antinodes
10 In compressional wave,the layer of medium having reduced pressure is called:
A. Compression
B. Elasticity
C. Node
D. Rarefaction

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