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

There is no net transfer of energy by particle of medium in

Question # 2

The speed of sound in a medium depends on

Question # 3

The distance covered by the wave during one period is called its:

Question # 4

The waves produced in a microwave oven have frequency

Question # 5

The waves in which the particles of the medium have displacement along the direction of propagation of waves are called

Question # 6

If the length of second pendulum becomes four times then its time period will become

Question # 7

Smaller the damping, greater will be the

Question # 8

A physical system under going forced vibrations is known as

Question # 9

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

Question # 10

When the bob of simple pendulum is at mean position, its K.E will be

Question # 11

Decibel is unit of

Question # 12

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

Question # 13

Which one of the following elasticizes is possessed by fluids:

Question # 14

The restoring force always directed towards the

Question # 15

The wave form of S.H.M will be

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 If a freely oscillating system is subjected to an external force, then
A. free vibrations will take place
B. the body will move with its natural frequency
C. forced vibrations will take place
D. none of them
2 The waves which propagate out in space due to oscillation of electric and magnetic fields are known as
A. e.m. waves
B. mechanical waves
C. sound waves
D. water waves
3 Energy is not carried by
A. Transverse progressive waves
B. Longitudinal vibration
C. Stationary waves
D. Electromagnetic
4 Of the following, the option ______ reminds of longitudinal waves.
A. Sound waves
B. Heat waves
C. Electromagnetic waves
D. Light waves
5 When two progressive waves of nearly same frequencies superimpose and give rise to beats, then
A. Frequency of beat changes with time
B. Frequency of beat changes with location of observer
C. All particles of medium vibrate simple harmonically with frequency equal to the difference between frequencies of component waves
D. Amplitude of vibration of particles at any point changes simple harmonically with frequency equal to difference between two component waves
6 The example of mechanical wave is
A. waves in ropes
B. waves on water surface
C. waves in air
D. all of them
7 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
8 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
9 The distance covered by the wave during one period is called its:
A. Wave number
B. Frequency
C. Wavelength
D. Time period
10 Example of progressive wave is
A. transverse waves
B. longitudinal waves
C. both of them
D. none of them

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