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

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

Question # 2

Energy is dissipated and consequently the energy mass system do not oscillate indefinitely because of

Question # 3

SI unit of wave length is:

Question # 4

The expression of Hook's law is

Question # 5

Which one is not produced by sound waves in air?

Question # 6

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

Question # 7

Which waves are used in sonography?

Question # 8

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

Question # 9

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

Question # 10

The characteristic of a body executing S.H.M is that its acceleration is

Question # 11

When an oscillatory motion repeats itself, then this type of motion is called

Question # 12

Velocity of sound in vacuum (in m/s) is

Question # 13

It two waves of amplitude 'a' produce a resultant wave of amplitude a, then the phase difference between them will be

Question # 14

One complete round trip of the body about its mean position is called

Question # 15

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

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 In the production of beats by 2 waves of same amplitude and nearly same frequency, the maximum intensity to each of the constituent waves is
A. Same
B. 2 times
C. 4 times
D. 8 times
2 If the length of second pendulum becomes four times then its time period will become
A. Four time
B. Two times
C. Six times
D. Eight times
3 Example of progressive wave is
A. transverse waves
B. longitudinal waves
C. both of them
D. none of them
4 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
5 Which one of the following is an example of resonance
A. swing
B. tuning a radio
C. microwave oven
D. all of them
6 The waves which propagate by the collision of material particles are known as
A. e.m. waves
B. mechanical waves
C. light waves
D. microwaves
7 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
8 The velocity of sound in air not effected by changes in
A. Moisture contents in air
B. Temperature of air
C. The atmosphere pressure
D. The composition of air
9 Which of the following is not mechanical wave?
A. Sound wave
B. Light wave
C.
wave produced in spring
D. None of them
10 The characteristic of a body executing S.H.M is that its acceleration is
A. inversely proportional to displacement
B. directly proportional to displacement
C. independent of displacement
D. equal to zero

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