ECAT Pre Computer Science Chapter 8 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 8 Waves

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ECAT Physics Chapter 8 Waves

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Question # 1

A simple pendulum consists of a

Question # 2

The velocity of sound at same temperature is maximum in

Question # 3

The velocity of sound in air not effected by changes in

Question # 4

The waves moving from a sitar to a listener in air are

Question # 5

When an oscillatory motion repeats itself, then this type of motion is called

Question # 6

Transverse waves can be set up:

Question # 7

The velocity of sound in air depends upon

Question # 8

Example of progressive wave is

Question # 9

When a mass 'm' is pulled slowly, the spring stretches by an amount xo, then the work done will be

Question # 10

In the resonance condition, the amplitude of the oscillator becomes

Question # 11

SI unit of frequency is

Question # 12

Which one of the following is an example of resonance

Question # 13

Si units of time period is

Question # 14

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

Question # 15

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

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 The ratio of velocity of sound in air at 4 atm pressure and that at 1 atm pressure would be
A. 1 : 2
B. 4 : 1
C. 1 : 4
D. 2 : 1
2 The waves in which the particles of the medium are displaced in a direction perpendicular to the direction of propagation of waves are known as
A. longitudinal waves
B. transverse waves
C. non-mechanical waves
D. none of them
3 If the mass of the simple pendulum becomes double, its time period
A. increase
B. decreases
C. remains constant
D. none of them
4 If the displacement of a body executing S.H.M is plotted against time, then the curve is known as
A. frequency of S.H.M
B. period of S.H.M
C. wave form
D. none of them
5 One complete round trip of the body about its mean position is called
A. displacement
B. vibration
C. a complete motion
D. an acceleration
6 Ultra-violet rays differ from X-rays in that they
A. Cannot be diffracted
B. Cannot be polarized
C. Have a lower frequency
D. Are deviated when they pass through a magnetic field
7 Si units of time period is
A. second
B. hertz
C. revolution
D. vibration/sec
8 The waves in which the particles of the medium have displacement along the direction of propagation of waves are called
A. longitudinal waves
B. transverse waves
C. non-mechanical waves
D. none of them
9 Laplace formula is derived from
A. Isothermal change
B. Adiabatic change
C. Isobaric change
D. None of these
10 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

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