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 mass of the simple pendulum becomes double, its time period

Question # 2

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

Question # 3

A simple pendulum consists of a

Question # 4

SI unit of frequency is

Question # 5

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

Question # 6

Example of progressive wave is

Question # 7

Example of vibratory motion is

Question # 8

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

Question # 9

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

Question # 10

Fidelity refers to

Question # 11

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

Question # 12

The bob of a simple pendulum is suspended by

Question # 13

SI unit of wave length is:

Question # 14

transverse wave motion is possible in:

Question # 15

At 'resonance' the transfer of energy from deriving source to the oscillator is

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Sr.# Question Answer
1 In stationary waves
A. Energy is uniformly distributed
B. Energy is minimum at nodes and maximum at antinodes
C. Energy is maximum at nodes and minimum at antidotes
D. Alternating maximum and minimum energy producing at nodes and antinodes
2 The distance covered by the wave in one second is:
A. Wave number
B. Wave length
C. Frequency
D. Wave speed
3 The temperature at which the speed of sound becomes double as was at 27°C is
A. 273°C
B. 0°C
C. 927°C
D. 1027°C
4 The damping depends upon the
A. amplitude
B. sharpness
C. both of them
D. none of them
5 The ratio of velocity of sound in air at 4 atm pressure and that at 1 atm pressure would be
A. 1 : 2
B. 4 : 1
C. 1 : 4
D. 2 : 1
6 The resonance will be sharp, if the amplitude decreases rapidly at a frequency
A. equal to the resonant frequency
B. slight different from the resonant frequency
C. greatly different from the resonant frequency
D. any one of them
7 Which one of the following could be the frequency of ultraviolet radiation?
A. 1.0 x 106Hz
B. 1.0 x 109Hz
C. 1.0 x 1012Hz
D. 1.0 x 1015Hz
8 In compressional wave,the layer of medium having reduced pressure is called:
A. Compression
B. Elasticity
C. Node
D. Rarefaction
9 The wave motion set up in any medium depends upon:
A. Elasticity
B. Inertia
C. Density
D. All of these
10 The velocity of sound is greatest in
A. Water
B. Air
C. Vacuum
D. Metal

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