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

transverse wave motion is possible in:

Question # 2

The resonance will be sharp, if the amplitude decreases rapidly at a frequency

Question # 3

When a mass 'm' is pulled slowly, the spring stretches by an amount xo, then the work done will be

Question # 4

If two waves of length 50 cm and 51 cm produced 12 beats per second, the velocity of sound is

Question # 5

SI unit of frequency is

Question # 6

The time period of pendulums of different lengths would be

Question # 7

The ratio of velocity of sound in air at 4 atm pressure and that at 1 atm pressure would be

Question # 8

Acceleration of the mass at any instant is given by

Question # 9

The natural frequency of a pendulum which is vibrating freely, depends upon its

Question # 10

Smaller the damping, greater will be the

Question # 11

An object undergoes S.H.M has maximum acceleration when its displacement form the means position

Question # 12

When a body is performing S.H.M., its acceleration is

Question # 13

Time period of simple pendulum is independent of

Question # 14

The time required to complete on vibration is called

Question # 15

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

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 If a freely oscillating system is subjected to an external force, then
A. free vibrations will take place
B. the body will move with its natural frequency
C. forced vibrations will take place
D. none of them
2 Fidelity refers to
A. Reproduction of original sound
B. Reproduction of original image
C. Reproduction of music
D. Reproduction of a CD from original copy
3 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
4 Si units of time period is
A. second
B. hertz
C. revolution
D. vibration/sec
5 Longitudinal waves are also called:
A. Congressional waves
B. Transverse waves
C. Radio waves
D. None of them
6 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
A. rotatory motion
B. motion under gravity
C. angular motion
D. simple harmonic motion
7 The example of mechanical wave is
A. waves in ropes
B. waves on water surface
C. waves in air
D. all of them
8 A heavily damped system has a fairly
A. sharp resonance curve
B. flat resonance curve
C. both of them
D. none of them
9 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
10 In the resonance condition, the amplitude of the oscillator becomes
A. very large
B. very small
C. zero
D. any one of them

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