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 not effected by changes in

Question # 2

A body is executing free vibrations when it oscilates

Question # 3

The vibrations of factory floor caused by the running of heavy machinery is an example of

Question # 4

If the time period a simple pendulum is 2 s, its frequency would be

Question # 5

The speed of sound in a medium depends on

Question # 6

The bob of a simple pendulum is suspended by

Question # 7

The characteristic of a body executing S.H.M is that its acceleration is

Question # 8

Crests and troughs are formed in:

Question # 9

Shock absorber of the car is an example of

Question # 10

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

Question # 11

Fluids can transmit:

Question # 12

Smaller the damping, the resonance will be

Question # 13

Associated with the motion of a driven harmonic oscillator, there is a very striking phenomenon, know as

Question # 14

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 # 15

Which of the following is the longitudinal waves?

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ECAT Chapter 8 Important MCQ's

Sr.# Question Answer
1 The waves moving from a sitar to a listener in air are
A. Longitudinal progressive
B. Longitudinal stationary
C. Transverse progressive
D. Transverse stationary
2 When a body is performing S.H.M., its acceleration is
A. inversely proportional to the displacement
B. directly proportional to the applied force
C. directly proportional to the amplitude
D. directly proportional to the displacement but in opposite direction
3 Which one of the following elasticizes is possessed by fluids:
A. Young's elastic modulus (length)
B. Bulk elastic modulus (volume)
C. Modulus of rigidity (shape)
D. None of these
4 If the mass of the simple pendulum becomes double, its time period
A. increase
B. decreases
C. remains constant
D. none of them
5 The frequency of free vibrations is known as
A. free frequency
B. forced frequency
C. natural frequency
D. un-natural frequency
6 Sound waves in air always
A. Longitudinal
B. Transverse
C. Stationary
D. Electromagnetic
7 One complete round trip of the body about its mean position is called
A. displacement
B. vibration
C. a complete motion
D. an acceleration
8 For production of beats the two sources must have
A. Different frequencies and same amplitude
B. Different frequencies
C. Different frequencies, same amplitude and same phase
D. Different frequencies and same phase
9 The weight 'mg' of the bob is resolved into
A. one component
B. two components
C. three components
D. four components
10 In the resonance condition, the amplitude of the oscillator becomes
A. very large
B. very small
C. zero
D. any one of them

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