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

When temperature increase, the frequency of a tuning fork

Question # 2

Of the following, the option ______ reminds of longitudinal waves.

Question # 3

The phase determines the

Question # 4

The bob of a simple pendulum is suspended by

Question # 5

The expression of Hook's law is

Question # 6

A physical system under going forced vibrations is known as

Question # 7

Example of progressive wave is

Question # 8

If the displacement of a body executing S.H.M is plotted against time, then the curve is known as

Question # 9

SI unit of frequency is

Question # 10

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

Question # 11

Data transmitted along glass-fiber cables is in the form of pulses of monochromatic red light each of duration 2.5 ns. Which of the following is the best estimate of the number of wavelength in each pulse?

Question # 12

A traveling wave has a shape of:

Question # 13

Energy is dissipated and consequently the energy mass system do not oscillate indefinitely because of

Question # 14

Fidelity refers to

Question # 15

Transverse waves can be set up:

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 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
2 A weakly damped system has fairly
A. sharp resonance curve
B. flat resonance curve
C. both of them
D. none of them
3 The natural frequency of a pendulum which is vibrating freely, depends upon its
A. mass
B. length
C. material
D. all of them
4 What is frequency of radio waves transmitted by a station, if the wavelength of those waves is 300 m?
A. 1 MHz
B. 10 Hz
C. 1 GHz
D. 100000 Hz
5 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
6 When a body is pulled away from its rest or equilibrium position and then released, the body oscillates due to
A. applied force
B. momentum
C. restoring force
D. none of them
7 Wave disturbances may also come in a concentrated bundle, like shock wave from an aeroplane flying at
A. subsonic speed
B. sonic speed
C. super sonic speed
D. any one of them
8 Sound waves in air always
A. Longitudinal
B. Transverse
C. Stationary
D. Electromagnetic
9 Which one of the following is an example of resonance
A. swing
B. tuning a radio
C. microwave oven
D. all of them
10 The maximum displacement of a body on either side of its equilibrium position is called
A. frequency
B. amplitude
C. displacement
D. time period

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