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

In the same medium, velocity of the wave:

Question # 2

Wave disturbances may also come in a concentrated bundle, like shock wave from an aeroplane flying at

Question # 3

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

Question # 4

Which of the following is the longitudinal waves?

Question # 5

SI unit of wave length is:

Question # 6

There is no net transfer of energy by particle of medium in

Question # 7

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

Question # 8

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

Question # 9

The portion of the water above its mean level forms a:

Question # 10

The vibratory motion of a body whose magnitude of acceleration is directly proportional to the magnitude of its displacement and is always directed towards the equilibrium position is called

Question # 11

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

Question # 12

When a body is pulled away from its rest or equilibrium position and then released, the body oscillates due to

Question # 13

Angular frequency 'w' is basically a characteristics of

Question # 14

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

Question # 15

Decibel is unit of

Question # 16

Mechanical waves on the surface of a liquid are

Question # 17

A weakly damped system has fairly

Question # 18

Which one is not produced by sound waves in air?

Question # 19

The vibrations of factory floor caused by the running of heavy machinery is an example of

Question # 20

Energy is not carried by

Question # 21

Example of progressive wave is

Question # 22

Time period of simple pendulum is independent of

Question # 23

A traveling wave has a shape of:

Question # 24

In stationary waves

Question # 25

A stationary sound wave has frequency 165 Hz (speed of sound in air = 330 m/s) then distance between two consecutive nodes is

Question # 26

The bob of a simple pendulum is suspended by

Question # 27

Progressive waves of frequency 300 Hz are superimposed in produced a system of stationary waves in which adjacent nodes are 1.5 m apart. What is the speed of the progressive waves?

Question # 28

While describing the motion of a simple pendulum, the frictional effects are

Question # 29

The time period of pendulums of different lengths would be

Question # 30

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

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ECAT Chapter 8 Important MCQ's

Sr.# Question Answer
1 When half of the cycle of a body executing S.H.M is completed, then the phase of the vibration will be
A. 45°
B. 90°
C. 135°
D. 180°
2 Decibel is unit of
A. Intensity of light
B. x-ray radiation capacity
C. sound loudness
D. Energy of radiation
3 Which waves are used in sonography?
A. Microwaves
B. Infra red waved
C. Sound waves
D. Ultrasonic waves
4 The bob of a simple pendulum is suspended by
A. string
B. heavy inextensible string
C. light extensible string
D. light inextensible string
5 A string is stretched between two points and is plucked at right angles to its length, the vibration produced is:
A. Longitudinal wave
B. Transverse wave
C. No vibration at all
D. None of them
6 The time period of pendulums of different lengths would be
A. same
B. different
C. both of them
D. none of them
7 Which of the following is/are example/s if mechanical waves i.e. waves generated in _______:
A. Rope
B. Coil of spring
C. Water
D. All of them
8 Acceleration of the mass at any instant is given by
A. a=k/m x
B. a= - m/k x
C. a = - k/m x
D. a=m/k x
9 For transmission of both transverse and longitudinal waves, we can use:
A. Solid
B. Gas
C. Plasma
D. None of these
10 The portion of the water above its mean level forms a:
A. Crest
B. Trough
C. Both A and B
D. None of these

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