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

Decibel is unit of

Question # 3

Smaller the damping, greater will be the

Question # 4

The bob of a simple pendulum is suspended by

Question # 5

An object undergoes S.H.M has maximum speed when its displacement from the mean position is

Question # 6

Crests and troughs are formed in:

Question # 7

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 # 8

The waves in which the particles of the medium are displaced in a direction perpendicular to the direction of propagation of waves are known as

Question # 9

Transverse waves can be set up:

Question # 10

A simple pendulum consists of a

Question # 11

A heavily damped system has a fairly

Question # 12

When temperature increase, the frequency of a tuning fork

Question # 13

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

Question # 14

In compressional wave,the layer of medium having reduced pressure is called:

Question # 15

When sound waves travel from air to water which of these remains constant?

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 Sound waves in air always
A. Longitudinal
B. Transverse
C. Stationary
D. Electromagnetic
2 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
3 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
4 The example of mechanical wave is
A. waves in ropes
B. waves on water surface
C. waves in air
D. all of them
5 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
6 If the external driving force is periodic with a period compareable to the natural period of the oscillator, then we get
A. diffraction
B. beat
C. interference
D. resonance
7 If one end of a rubber cord is fixed with a support and the other end is wiggled by hand, the waves generated on the card are:
A. Stationary waves
B. Transverse waves
C. Both of these
D. None of these
8 Such oscillations in which the amplitude decreases steadily with time, are called
A. resonance
B. force oscillations
C. large oscillations
D. damped oscillations
9 The waves moving from a sitar to a listener in air are
A. Longitudinal progressive
B. Longitudinal stationary
C. Transverse progressive
D. Transverse stationary
10 The time period of pendulums of different lengths would be
A. same
B. different
C. both of them
D. none of them

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