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

Time period of simple pendulum is independent of

Question # 2

The example of mechanical wave is

Question # 3

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

Question # 4

If the external driving force is periodic with a period compareable to the natural period of the oscillator, then we get

Question # 5

SI unit of wave length is:

Question # 6

Si units of time period is

Question # 7

If two waves of length 50 cm and 51 cm produced 12 beats per second, the velocity of sound is

Question # 8

Which one of the following could be the frequency of ultraviolet radiation?

Question # 9

Velocity of sound in vacuum (in m/s) is

Question # 10

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

Question # 11

transverse wave motion is possible in:

Question # 12

A traveling wave has a shape of:

Question # 13

The total energy of spring mass system is

Question # 14

Which one of the following wave motions is transverse:

Question # 15

For a body executing S. H. M, its

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 Which type of wave can be set up in solids
A. longitudinal waves
B. transverse waves
C. both of them
D. none of them
2 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
3 When the particles of the medium vibrate about their mean position, along the direction of the motion of waves, then the waves are called:
A. Longitudinal waves
B. Transverse waves
C. Water waves
D. Complex waves
4 A body is executing free vibrations when it oscilates
A. with the interference of an external force
B. without the interference of an external force
C. with the interference of an internal force
D. none of them
5 Smaller the damping, greater will be the
A. frequency
B. wavelength
C. amplitude
D. none of them
6 The wave motion set up in any medium depends upon:
A. Elasticity
B. Inertia
C. Density
D. All of these
7 At 'resonance' the transfer of energy from deriving source to the oscillator is
A. maximum
B. minimum
C. zero
D. none of them
8 Smaller the damping, the resonance will be
A. more flat
B. more sharp
C. both of them
D. none of them
9 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
10 A swing has
A. one natural frequency
B. two natural frequencies
C. three natural frequencies
D. four natural frequencies

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