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 in air depends upon

Question # 2

The temperature at which the speed of sound becomes double as was at 27°C is

Question # 3

Crests and troughs are formed in:

Question # 4

Resonance occurs when one of the natural frequencies of vibration of the forced or driven harmonic oscillator

Question # 5

If F=0.04 N and X=4 cm then K=

Question # 6

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

Question # 7

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

Question # 8

Fluids can transmit:

Question # 9

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

Question # 10

If one end of a rubber cord is fixed with a support and the other end is wiggled by hand, the waves generated on the card are:

Question # 11

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

Question # 12

When a wave is travels from one place to another, it transfers:

Question # 13

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

Question # 14

The expression for restoring force is

Question # 15

When the particles of the medium vibrate about their mean position, along the direction of the motion of waves, then the waves are called:

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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 Which of the following is the longitudinal waves?
A. Sound waves
B. Waves on plucked string
C. Water waves
D. Light waves
3 One complete round trip of the body about its mean position is called
A. displacement
B. vibration
C. a complete motion
D. an acceleration
4 The distance covered by the wave in one second is:
A. Wave number
B. Wave length
C. Frequency
D. Wave speed
5 Example of progressive wave is
A. transverse waves
B. longitudinal waves
C. both of them
D. none of them
6 Sound waves in air always
A. Longitudinal
B. Transverse
C. Stationary
D. Electromagnetic
7 If one end of a rubber cord is fixed with a support and the other end is wiggled by hand, the waves generated on the card are:
A. Stationary waves
B. Transverse waves
C. Both of these
D. None of these
8 An object undergoes S.H.M has maximum speed when its displacement from the mean position is
A. maximum
B. zero
C. half of the maximum value
D. one third of the maximum value
9 It two waves of amplitude 'a' produce a resultant wave of amplitude a, then the phase difference between them will be
A. 60°
B. 90°
C. 120°
D. 180°
10 If F=0.04 N and X=4 cm then K=
A. 1 Nm-1
B. 2 Nm-1
C. 3 Nm-1
D. 4 Nm-1

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