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

With the propagation of a longitudinal wave through a material medium, the quantities transmitted in the propagation direction are

Question # 2

Sound waves in air always

Question # 3

Si units of time period is

Question # 4

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

Question # 5

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

Question # 6

For a body executing S. H. M, its

Question # 7

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

Question # 8

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 # 9

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

Question # 10

Acceleration of the mass at any instant is given by

Question # 11

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

Question # 12

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

Question # 13

The principle of superposition states that

Question # 14

The maximum displacement of a body on either side of its equilibrium position is called

Question # 15

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

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 A physical system under going forced vibrations is known as
A. Simple harmonic oscillator
B. Compound harmonic oscillator
C. Physical harmonic oscillator
D. driven harmonic oscillator
2 The phase determines the
A. displacement
B. amplitude
C. frequency
D. state of motion of vibrating body
3 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
4 To hear a clear echo, the reflecting surface must be at a minimum distance of
A. 10 m
B. 16.5 m
C. 33 m
D. 66 m
5 Associated with the motion of a driven harmonic oscillator, there is a very striking phenomenon, know as
A. waves
B. beat
C. interference
D. resonance
6 The principle of superposition states that
A. The total displacement due to several waves is the sum of the displacement due to those waves acting individually
B. Two stationary waves superimpose to give two progressive waves
C. A diffraction pattern consists of many interference patterns superimposed on one another
D. Two progressive waves superimpose to give a stationary wave
7 Which type of wave can be set up in solids
A. longitudinal waves
B. transverse waves
C. both of them
D. none of them
8 In the resonance condition, the amplitude of the oscillator becomes
A. very large
B. very small
C. zero
D. any one of them
9 For production of beats the two sources must have
A. Different frequencies and same amplitude
B. Different frequencies
C. Different frequencies, same amplitude and same phase
D. Different frequencies and same phase
10 Smaller the damping, the resonance will be
A. more flat
B. more sharp
C. both of them
D. none of them

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