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 F=0.04 N and X=4 cm then K=

Question # 2

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

Question # 3

The temperature at which the speed of sound becomes double as was at 27°C is

Question # 4

Fluids can transmit:

Question # 5

The time period of pendulums of different lengths would be

Question # 6

Which one of the following could be the frequency of ultraviolet radiation?

Question # 7

In the same medium, velocity of the wave:

Question # 8

Which type of wave can be set up in solids

Question # 9

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

Question # 10

The weight 'mg' of the bob is resolved into

Question # 11

In the formula for finding the speed of waves in the spring, unit of m in SIn units is:

Question # 12

The waves in which the particles of the medium are displaced in a direction perpendicular to the direction of propagation of waves are known as

Question # 13

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

Question # 14

Decibel is unit of

Question # 15

In solids, only following type/s of wave can travel:

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 The portion of the water above its mean level forms a:
A. Crest
B. Trough
C. Both A and B
D. None of these
2 The total energy of spring mass system is
A. zero
B. changing with time
C. constant
D. none of them
3 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
4 One complete round trip of the body about its mean position is called
A. displacement
B. vibration
C. a complete motion
D. an acceleration
5 Angular frequency 'w' is basically a characteristics of
A. linear motion
B. circular motion
C. both of them
D. none of them
6 When a wave is travels from one place to another, it transfers:
A. Matter
B. Energy
C. Momentum
D. Both B and C
7 The waves produced in a microwave oven have frequency
A. 2450 Hz
B. 2450 K Hz
C. 2450 M Hz
D. 2450 G Hz
8 The velocity of sound at same temperature is maximum in
A. H2
B. N2
C. O2
D. NH3
9 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
10 The expression of Hook's law is
A. F=ma
B. F=kx
C. F= -kx
D. -kx=ma

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