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 amplitude of sound is doubled and the frequency reduced to one-fourth, the intensity of sound at the same point will be

Question # 2

The bob of a simple pendulum is suspended by

Question # 3

Velocity of sound in a diatomic as is 300 m/sec. what is its rms velocity?

Question # 4

The velocity of sound in air depends upon

Question # 5

When temperature increase, the frequency of a tuning fork

Question # 6

The number of vibrating body at any instant from its equilibrium position is called

Question # 7

In the same medium, velocity of the wave:

Question # 8

The principle of superposition states that

Question # 9

Through which character we can distinguish the light waves from sound waves

Question # 10

The waves which propagate through the oscillations of material particles are known as:

Question # 11

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

Question # 12

Which waves are used in sonography?

Question # 13

For transmission of both transverse and longitudinal waves, we can use:

Question # 14

The ratio of velocity of sound in air at 4 atm pressure and that at 1 atm pressure would be

Question # 15

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

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 For a body executing S. H. M, its
A. momentum remains constant
B. potential energy remains constant
C. kinetic energy remains constant
D. total energy remains constant
2 The phase determines the
A. displacement
B. amplitude
C. frequency
D. state of motion of vibrating body
3 Time period of a simple pendulum depends upon the
A. length of the pendulum
B. acceleration due to gravity
C. none of them
D. both of them
4 If the external driving force is periodic with a period compareable to the natural period of the oscillator, then we get
A. diffraction
B. beat
C. interference
D. resonance
5 Smaller the damping, the resonance will be
A. more flat
B. more sharp
C. both of them
D. none of them
6 At 'resonance' the transfer of energy from deriving source to the oscillator is
A. maximum
B. minimum
C. zero
D. none of them
7 Two sources of sound are said to be coherent if
A. The produce sounds of equal intensity
B. They produce sounds of equal frequency
C. They produce sound waves vibrating with the same phase
D. They produce sound waves with zero or constant phase difference all instant of time
8 Which of the following is not mechanical wave?
A. Sound wave
B. Light wave
C.
wave produced in spring
D. None of them
9 A weakly damped system has fairly
A. sharp resonance curve
B. flat resonance curve
C. both of them
D. none of them
10 Which of the following does not exhibit S.H.M?
A. a plucked violin string
B. a mass attached to a spring
C. a train shunting between two terminals
D. a simple pendulum

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