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 resonance will be sharp, if the amplitude decreases rapidly at a frequency

Question # 2

When a mass 'm' is pulled slowly, the spring stretches by an amount x0,then the average force would be

Question # 3

If the length of second pendulum becomes four times then its time period will become

Question # 4

Of the following, the option ______ reminds of longitudinal waves.

Question # 5

When two progressive waves of nearly same frequencies superimpose and give rise to beats, then

Question # 6

The waves produced in a microwave oven have wavelength.

Question # 7

Associated with the motion of a driven harmonic oscillator, there is a very striking phenomenon, know as

Question # 8

Which one of the following wave motions is transverse:

Question # 9

A physical system under going forced vibrations is known as

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

If the length of a simple pendulum is 0.25 m its time period would be

Question # 12

The time required to complete on vibration is called

Question # 13

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

Question # 14

If two waves of length 50 cm and 51 cm produced 12 beats per second, the velocity of sound is

Question # 15

A heavily damped system has a fairly

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 When half of the cycle of a body executing S.H.M is completed, then the phase of the vibration will be
A. 45°
B. 90°
C. 135°
D. 180°
2 Which one of the following wave motions is transverse:
A. Wave motion produced in water when a piece of stone is thrown into it
B. Pulling of weight hanging vertically with a spiral spring
C. Both of these
D. None of these
3 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
4 In the resonance condition, the amplitude of the oscillator becomes
A. very large
B. very small
C. zero
D. any one of them
5 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
6 At 'resonance' the transfer of energy from deriving source to the oscillator is
A. maximum
B. minimum
C. zero
D. none of them
7 A traveling wave has a shape of:
A. Square wave
B. Sine wave
C. Parabola
D. hyperbola
8 In the same medium, velocity of the wave:
A. Goes on increasing
B. Remains constant
C. Goes on decreasing
D. None of these
9 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
10 A swing has
A. one natural frequency
B. two natural frequencies
C. three natural frequencies
D. four natural frequencies

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