ECAT Pre General Science Physics Chapter 8 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 8 Waves

Try The MCQ's Test For ECAT Pre General Science Physics Chapter 8 Waves

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ECAT Pre General Science Physics Chapter 8 Waves

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Question # 1

When sound waves travel from air to water which of these remains constant?

Question # 2

Longitudinal waves are also called:

Question # 3

If the time period a simple pendulum is 2 s, its frequency would be

Question # 4

In the formula for finding the speed of waves in the spring, unit of m in SIn units is:

Question # 5

The restoring force always directed towards the

Question # 6

The natural frequency of a pendulum which is vibrating freely, depends upon its

Question # 7

Waves transport energy

Question # 8

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

Question # 9

When a wave is travels from one place to another, it transfers:

Question # 10

A wave, which transfer energy by moving away from the source of disturbance is called a

Question # 11

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

Question # 12

An object undergoes S.H.M has maximum speed when its displacement from the mean position is

Question # 13

As the bob of the pendulum moves to and fro which of the force is experienced by the bob

Question # 14

The bob of a simple pendulum is suspended by

Question # 15

The velocity of sound at same temperature is maximum in

Question # 16

The waves which propagate out in the space due to oscillations of electric and magnetic fields are called:

Question # 17

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

Question # 18

If a freely oscillating system is subjected to an external force, then

Question # 19

The waves produced in a microwave oven have frequency

Question # 20

A physical system under going forced vibrations is known as

Question # 21

Laplace formula is derived from

Question # 22

When a body is performing S.H.M., its acceleration is

Question # 23

Fluids can transmit:

Question # 24

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

Question # 25

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

Question # 26

Example of vibratory motion is

Question # 27

The time required to complete on vibration is called

Question # 28

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

Question # 29

For a body executing S. H. M, its

Question # 30

Which of the following changes at an antinode in a stationary wave?

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 transverse wave motion is possible in:
A. Air
B. A mixture of NH3and O2
C. Strings
D. All of these
2 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
3 The example of mechanical wave is
A. waves in ropes
B. waves on water surface
C. waves in air
D. all of them
4 The total energy of spring mass system is
A. zero
B. changing with time
C. constant
D. none of them
5 The expression for restoring force is
A. F=ma
B. F=kx
C. F= -kx
D. Kx=ma
6 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
7 Decibel is unit of
A. Intensity of light
B. x-ray radiation capacity
C. sound loudness
D. Energy of radiation
8 If the time period a simple pendulum is 2 s, its frequency would be
A. 2 Hz
B. 1.5 Hz
C. 1.0 Hz
D. 0.5 Hz
9 If F=0.04 N and X=4 cm then K=
A. 1 Nm-1
B. 2 Nm-1
C. 3 Nm-1
D. 4 Nm-1
10 In solids, only following type/s of wave can travel:
A. Transverse
B. Longitudinal
C. Both A and B
D. None of them

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