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 in which the particles of the medium have displacement along the direction of propagation of waves are called

Question # 2

There is no net transfer of energy by particle of medium in

Question # 3

The distance covered by the wave in one second is:

Question # 4

In solids, only following type/s of wave can travel:

Question # 5

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

Question # 6

The characteristic of a body executing S.H.M is that its acceleration is

Question # 7

A heavily damped system has a fairly

Question # 8

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

Question # 9

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

Question # 10

Resonance occurs when one of the natural frequencies of vibration of the forced or driven harmonic oscillator

Question # 11

A body is executing free vibrations when it oscilates

Question # 12

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

Question # 13

When half of the cycle of a body executing S.H.M is completed, then the phase of the vibration will be

Question # 14

When the bob of simple pendulum is at mean position, its K.E will be

Question # 15

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?

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 The loudness and pitch of a sound note depends on
A. Intensity and velocity
B. Frequency and velocity
C. Intensity and frequency
D. Frequency and number of harmonic
2 In the production of beats by 2 waves of same amplitude and nearly same frequency, the maximum intensity to each of the constituent waves is
A. Same
B. 2 times
C. 4 times
D. 8 times
3 At a certain instant a stationary transverse wave is found to have maximum kinetic energy. The appearance of string of that instant is
A. Sinusoidal shape with amplitude A/3
B. Sinusoidal shape with amplitude A/2
C. Sinusoidal shape with amplitude A
D. Straight line
4 Smaller the damping, greater will be the
A. frequency
B. wavelength
C. amplitude
D. none of them
5 The damping depends upon the
A. amplitude
B. sharpness
C. both of them
D. none of them
6 The vibratory or oscillatory motion of a body is
A. translatory motion
B. back and forth motion about its mean position
C. free all motion
D. circular motion
7 When sound waves travel from air to water which of these remains constant?
A. Velocity
B. Frequency
C. Wavelength
D. All the above
8 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
9 If a simple pendulum is shifted from karachi to K-2 cliff, its time period
A. remains the same
B. decreases
C. increases
D. none of them
10 The distance covered by the wave in one second is:
A. Wave number
B. Wave length
C. Frequency
D. Wave speed

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