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 displacement of a body executing S.H.M is plotted against time, then the curve is known as

Question # 2

Of the following, the option ______ reminds of longitudinal waves.

Question # 3

In transverse waves, the individual particles of the medium move:

Question # 4

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

Question # 5

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 # 6

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

Question # 7

The velocity of sound in air not effected by changes in

Question # 8

The force which opposes the applied force producing the displacement in the spring is called

Question # 9

Si units of time period is

Question # 10

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

Question # 11

Mechanical waves on the surface of a liquid are

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

When the particles of the medium vibrate about their mean position, along the direction of the motion of waves, then the waves are called:

Question # 14

With the propagation of a longitudinal wave through a material medium, the quantities transmitted in the propagation direction are

Question # 15

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

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 While describing the motion of a simple pendulum, the frictional effects are
A. taken into account
B. completely ignored
C. partially ignored
D. none of them
2 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
3 One complete round trip of the body about its mean position is called
A. displacement
B. vibration
C. a complete motion
D. an acceleration
4 If the external driving force is periodic with a period compareable to the natural period of the oscillator, then we get
A. diffraction
B. beat
C. interference
D. resonance
5 The restoring force always directed towards the
A. extreme position
B. mean position
C. both of them
D. none of them
6 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?
A. 100 ms-1
B. 200 ms-1
C. 450 ms-1
D. 900 ms-1
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 In transverse waves, the individual particles of the medium move:
A. In circles
B. Perpendicular to the direction of level
C. Parallel to the direction of level
D. None of these
9 Which one of the following is an example of resonance
A. swing
B. tuning a radio
C. microwave oven
D. all of them
10 Si units of time period is
A. second
B. hertz
C. revolution
D. vibration/sec

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