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 length of a simple pendulum is 0.25 m its time period would be

Question # 2

The time required to complete on vibration is called

Question # 3

When temperature increase, the frequency of a tuning fork

Question # 4

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

Question # 5

When half of the cycle of a body executing S.H.M is completed, then the phase of the vibration will be

Question # 6

Crests and troughs are formed in:

Question # 7

Such oscillations in which the amplitude decreases steadily with time, are called

Question # 8

The speed of sound in a medium depends on

Question # 9

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

Question # 10

A traveling wave has a shape of:

Question # 11

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

Question # 12

The waves which propagate by the collision of material particles are known as

Question # 13

In the formula for finding the speed of waves in the spring, unit of m in SIn units is:

Question # 14

At 'resonance' the transfer of energy from deriving source to the oscillator is

Question # 15

In stationary waves

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 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
2 Transverse waves can be set up:
A. Solids
B. Liquids
C. Gases
D. All of them
3 Data transmitted along glass-fiber cables is in the form of pulses of monochromatic red light each of duration 2.5 ns. Which of the following is the best estimate of the number of wavelength in each pulse?
A. 103
B. 106
C. 109
D. 1012
4 The waves in which the particles of the medium are displaced in a direction perpendicular to the direction of propagation of waves are known as
A. longitudinal waves
B. transverse waves
C. non-mechanical waves
D. none of them
5 The waves in which the particles of the medium have displacement along the direction of propagation of waves are called
A. longitudinal waves
B. transverse waves
C. non-mechanical waves
D. none of them
6 Energy is dissipated and consequently the energy mass system do not oscillate indefinitely because of
A. very small energy
B. very large energy
C. frictional forces
D. acceleration due to gravity
7 The instantaneous velocity of a body moving along a circle is directed
A. along the radius
B. along the tangent
C. away from the circle
D. none of them
8 If the length of second pendulum becomes four times then its time period will become
A. Four time
B. Two times
C. Six times
D. Eight times
9 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
10 Velocity of sound in vacuum (in m/s) is
A. 330
B. 1000
C. 156
D. 0

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