ECAT Pre General Science Physics Chapter 8 MCQ Test With Answer

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

A body is executing free vibrations when it oscilates

Question # 2

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

Question # 3

The time period of pendulums of different lengths would be

Question # 4

The velocity of sound in air not effected by changes in

Question # 5

The number of vibrating body at any instant from its equilibrium position is called

Question # 6

A traveling wave has a shape of:

Question # 7

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

Question # 8

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

Question # 9

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

Question # 10

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

Question # 11

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

Question # 12

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

Question # 13

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 # 14

If the length of a simple pendulum is 0.25 m its time period would be

Question # 15

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

Question # 16

In case of mechanical waves, we study the motion of

Question # 17

Which one is not produced by sound waves in air?

Question # 18

The waves produced in a microwave oven have wavelength.

Question # 19

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

Question # 20

When temperature increase, the frequency of a tuning fork

Question # 21

transverse wave motion is possible in:

Question # 22

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

Question # 23

Angular frequency 'w' is basically a characteristics of

Question # 24

The velocity of sound is greatest in

Question # 25

Which one of the following elasticizes is possessed by fluids:

Question # 26

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

Question # 27

In the resonance condition, the amplitude of the oscillator becomes

Question # 28

Which of the following medium/media can transmit both transverse and longitudinal waves:

Question # 29

A heavily damped system has a fairly

Question # 30

The bob of a simple pendulum is suspended by

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 The waves which propagate out in the space due to oscillations of electric and magnetic fields are called:
A. Mechanical waves
B. Electromagnetic waves
C. Matter waves
D. All of them
2 When temperature increase, the frequency of a tuning fork
A. Increases
B. Decreases
C. Remains same
D. Increase or decreases depending on the material
3 Angular frequency 'w' is basically a characteristics of
A. linear motion
B. circular motion
C. both of them
D. none of them
4 The square of 0.4 is:
A. Greater than 0.4
B. Smaller than 0.4
C. Equal to 0.4
D. None of them
5 The time required to complete on vibration is called
A. frequency
B. total time
C. time period
D. velocity
6 Of the following, the option ______ reminds of longitudinal waves.
A. Sound waves
B. Heat waves
C. Electromagnetic waves
D. Light waves
7 If two waves of length 50 cm and 51 cm produced 12 beats per second, the velocity of sound is
A. 360 m/s
B. 306 m/s
C. 331 m/s
D. 340 ms
8 The distance covered by the wave in one second is:
A. Wave number
B. Wave length
C. Frequency
D. Wave speed
9 Transverse waves can be set up:
A. Solids
B. Liquids
C. Gases
D. All of them
10 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

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