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 distance covered by the wave in one second is:

Question # 2

The velocity of sound at same temperature is maximum in

Question # 3

The vibratory or oscillatory motion of a body is

Question # 4

For transmission of both transverse and longitudinal waves, we can use:

Question # 5

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

Question # 6

Through which character we can distinguish the light waves from sound waves

Question # 7

Which one of the following elasticizes is possessed by fluids:

Question # 8

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

Question # 9

Laplace formula is derived from

Question # 10

Data transmitted along glass-fiber cables is in the form of pulses of monochromatic red light each of duration 2.5 ns. Which of the following is the best estimate of the number of wavelength in each pulse?

Question # 11

The distance covered by the wave during one period is called its:

Question # 12

Angular frequency 'w' is basically a characteristics of

Question # 13

The bob of a simple pendulum is suspended by

Question # 14

Ultra-violet rays differ from X-rays in that they

Question # 15

The velocity of sound in air depends upon

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 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
2 If the length of a simple pendulum is 0.25 m its time period would be
A. 1.0 s
B. 2.0 s
C. 3.0 s
D. 4.0 s
3 A string is stretched between two points and is plucked at right angles to its length, the vibration produced is:
A. Longitudinal wave
B. Transverse wave
C. No vibration at all
D. None of them
4 Mechanical waves on the surface of a liquid are
A. Transverse
B. Longitudinal
C. Torsional
D. both transverse and longitudinal
5 The force which opposes the applied force producing the displacement in the spring is called
A. restoring force
B. periodic force
C. centripetal force
D. resistive force
6 For a body executing S. H. M, its
A. momentum remains constant
B. potential energy remains constant
C. kinetic energy remains constant
D. total energy remains constant
7 When the particles of the medium vibrate about their mean position, along the direction of the motion of waves, then the waves are called:
A. Longitudinal waves
B. Transverse waves
C. Water waves
D. Complex waves
8 The example of mechanical wave is
A. waves in ropes
B. waves on water surface
C. waves in air
D. all of them
9 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
10 When a mass 'm' is pulled slowly through a distance 'xo' , the elastic potential energy of the spring would be
A. P.E=Kx2o
B. P.E= 1/2kxo
C. P.E=1/2Kx2o
D. P.E=Kx2o

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