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

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

Question # 2

The distance covered by the wave during one period is called its:

Question # 3

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

Question # 4

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

Question # 5

The time period of pendulums of different lengths would be

Question # 6

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

Question # 7

The waves which propagate through the oscillations of material particles are known as:

Question # 8

At a certain instant a stationary transverse wave is found to have maximum kinetic energy. The appearance of string of that instant is

Question # 9

Smaller the damping, greater will be the

Question # 10

Which of the following is not mechanical wave?

Question # 11

The waves which propagate by the collision of material particles are known as

Question # 12

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

Question # 13

For transmission of both transverse and longitudinal waves, we can use:

Question # 14

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

Question # 15

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

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 Velocity of sound in a diatomic as is 300 m/sec. what is its rms velocity?
A. 400 m/sec
B. 40 m/sec
C. 430 m/sec
D. 300 m/sec
2 Energy is dissipated and consequently the energy mass system do not oscillate indefinitely because of
A. very small energy
B. very large energy
C. frictional forces
D. acceleration due to gravity
3 When temperature increase, the frequency of a tuning fork
A. Increases
B. Decreases
C. Remains same
D. Increase or decreases depending on the material
4 The velocity of sound at same temperature is maximum in
A. H2
B. N2
C. O2
D. NH3
5 When a body is pulled away from its rest or equilibrium position and then released, the body oscillates due to
A. applied force
B. momentum
C. restoring force
D. none of them
6 Which of the following is the longitudinal waves?
A. Sound waves
B. Waves on plucked string
C. Water waves
D. Light waves
7 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
8 The waves moving from a sitar to a listener in air are
A. Longitudinal progressive
B. Longitudinal stationary
C. Transverse progressive
D. Transverse stationary
9 SI unit of wave length is:
A. Kilometer
B. Metre
C. Centimetre
D. Hertz
10 If we increase the length of a simple pendulum four times, its time period will become
A. 2 times
B. 3 times
C. 4 times
D. 6 times

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