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 waves which propagate out in the space due to oscillations of electric and magnetic fields are called:

Question # 2

Time period of simple pendulum is independent of

Question # 3

SI unit of wave length is:

Question # 4

transverse wave motion is possible in:

Question # 5

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

Question # 6

In case of mechanical waves, we study the motion of

Question # 7

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

Question # 8

The damping depends upon the

Question # 9

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

Question # 10

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

Question # 11

Angular frequency 'w' is basically a characteristics of

Question # 12

If the time period a simple pendulum is 2 s, its frequency would be

Question # 13

A wave, which transfer energy by moving away from the source of disturbance is called a

Question # 14

It two waves of amplitude 'a' produce a resultant wave of amplitude a, then the phase difference between them will be

Question # 15

Decibel is unit of

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 Which of the following is the longitudinal waves?
A. Sound waves
B. Waves on plucked string
C. Water waves
D. Light waves
2 Angular frequency 'w' is basically a characteristics of
A. linear motion
B. circular motion
C. both of them
D. none of them
3 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?
A. 103
B. 106
C. 109
D. 1012
4 With the propagation of a longitudinal wave through a material medium, the quantities transmitted in the propagation direction are
A. Energy, momentum and mass
B. Energy
C. Energy and mass
D. Energy and linear momentum
5 Such oscillations in which the amplitude decreases steadily with time, are called
A. resonance
B. force oscillations
C. large oscillations
D. damped oscillations
6 Which waves are used in sonography?
A. Microwaves
B. Infra red waved
C. Sound waves
D. Ultrasonic waves
7 The instantaneous velocity of a body moving along a circle is directed
A. along the radius
B. along the tangent
C. away from the circle
D. none of them
8 The total energy of spring mass system is
A. zero
B. changing with time
C. constant
D. none of them
9 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
10 Ultra-violet rays differ from X-rays in that they
A. Cannot be diffracted
B. Cannot be polarized
C. Have a lower frequency
D. Are deviated when they pass through a magnetic field

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