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

The time period of pendulums of different lengths would be

Question # 2

The bob of a simple pendulum is suspended by

Question # 3

When sound waves travel from air to water which of these remains constant?

Question # 4

The waves which propagate out in space due to oscillation of electric and magnetic fields are known as

Question # 5

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 # 6

Example of vibratory motion is

Question # 7

The example of mechanical wave is

Question # 8

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

Question # 9

If the external driving force is periodic with a period compareable to the natural period of the oscillator, then we get

Question # 10

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

Question # 11

Angular frequency 'w' is basically a characteristics of

Question # 12

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

Question # 13

Acceleration of the mass at any instant is given by

Question # 14

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

Question # 15

The wave motion set up in any medium depends upon:

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 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
2 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
3 To hear a clear echo, the reflecting surface must be at a minimum distance of
A. 10 m
B. 16.5 m
C. 33 m
D. 66 m
4 Longitudinal waves are also called:
A. Congressional waves
B. Transverse waves
C. Radio waves
D. None of them
5 Example of vibratory motion is
A. mass suspended from a spring
B. a bob of simple pendulum
C. mass attached to a spring placed
D. all of them
6 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
7 The waves moving from a sitar to a listener in air are
A. Longitudinal progressive
B. Longitudinal stationary
C. Transverse progressive
D. Transverse stationary
8 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
9 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
10 Of the following, the option ______ reminds of longitudinal waves.
A. Sound waves
B. Heat waves
C. Electromagnetic waves
D. Light waves

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