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

Question # 2

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

Question # 3

Which one of the following elasticizes is possessed by fluids:

Question # 4

The expression of Hook's law is

Question # 5

The velocity of sound in air not effected by changes in

Question # 6

A physical system under going forced vibrations is known as

Question # 7

A string is stretched between two points and is plucked at right angles to its length, the vibration produced is:

Question # 8

The total energy of spring mass system is

Question # 9

Smaller the damping, greater will be the

Question # 10

What is frequency of radio waves transmitted by a station, if the wavelength of those waves is 300 m?

Question # 11

The maximum displacement of a body on either side of its equilibrium position is called

Question # 12

When the bob of simple pendulum is at mean position, its K.E will be

Question # 13

SI unit of frequency is

Question # 14

The wave form of S.H.M will be

Question # 15

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

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 The waves produced in a microwave oven have wavelength.
A. 12 mm
B. 12 cm
C. 12 m
D. 12 mm
2 When the bob of simple pendulum is at mean position, its K.E will be
A. maximum
B. minimum
C. zero
D. all of them
3 The time period of pendulums of different lengths would be
A. same
B. different
C. both of them
D. none of them
4 The portion of the water above its mean level forms a:
A. Crest
B. Trough
C. Both A and B
D. None of these
5 Example of vibratory motion is
A. mass suspended from a spring
B. a bob of simple pendulum
C. mass attached to a spring placed
D. all of them
6 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
7 When two waves with same frequency and constant phase difference phase difference interfere
A. There is a gain of energy
B. There is a loss of energy
C. The energy is redistributed and the distribution changes with time
D. The energy is redistributed and the distribution remains constant with time
8 Which of the following is the longitudinal waves?
A. Sound waves
B. Waves on plucked string
C. Water waves
D. Light waves
9 Two sound waves of slightly different frequencies propagating in the same direction produce beats due to
A. Interference
B. Diffraction
C. Polarization
D. Refraction
10 Example of progressive wave is
A. transverse waves
B. longitudinal waves
C. both of them
D. none of them

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