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 loudness and pitch of a sound note depends on

Question # 2

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:

Question # 3

In stationary waves

Question # 4

The instantaneous velocity of a body moving along a circle is directed

Question # 5

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 # 6

An object undergoes S.H.M has maximum acceleration when its displacement form the means position

Question # 7

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

Question # 8

If the mass of the simple pendulum becomes double, its time period

Question # 9

SI unit of wave length is:

Question # 10

A weakly damped system has fairly

Question # 11

Which of the following is not mechanical wave?

Question # 12

SI unit of frequency is

Question # 13

The phase determines the

Question # 14

The velocity of sound in air not effected by changes in

Question # 15

In the resonance condition, the amplitude of the oscillator becomes

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 The total energy of spring mass system is
A. zero
B. changing with time
C. constant
D. none of them
2 What is frequency of radio waves transmitted by a station, if the wavelength of those waves is 300 m?
A. 1 MHz
B. 10 Hz
C. 1 GHz
D. 100000 Hz
3 The weight 'mg' of the bob is resolved into
A. one component
B. two components
C. three components
D. four components
4 Transverse waves can be set up:
A. Solids
B. Liquids
C. Gases
D. All of them
5 The waves which propagate out in space due to oscillation of electric and magnetic fields are known as
A. e.m. waves
B. mechanical waves
C. sound waves
D. water waves
6 The bob of a simple pendulum is suspended by
A. string
B. heavy inextensible string
C. light extensible string
D. light inextensible string
7 Resonance occurs when one of the natural frequencies of vibration of the forced or driven harmonic oscillator
A. greater than the frequency of applied force
B. equal to the frequency of applied force
C. less than the frequency of applied force
D. all of them
8 The speed of sound in a medium depends on
A. The elastic property but not on the inertia property
B. The inertia property but not on the elastic property
C. The elastic property as well as the inertia property
D. Neither the elastic property nor the inertia property
9 A swing has
A. one natural frequency
B. two natural frequencies
C. three natural frequencies
D. four natural frequencies
10 A second's pendulum is a pendulum whose time period is
A. 1 second
B. 2 seconds
C. 3 seconds
D. 4 seconds

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