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

Ultra-violet rays differ from X-rays in that they

Question # 2

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

Question # 3

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

Question # 4

Smaller the damping, the resonance will be

Question # 5

A weakly damped system has fairly

Question # 6

Acceleration of the mass at any instant is given by

Question # 7

If we increase the length of a simple pendulum four times, its time period will become

Question # 8

Velocity of sound in vacuum (in m/s) is

Question # 9

Progressive waves of frequency 300 Hz are superimposed in produced a system of stationary waves in which adjacent nodes are 1.5 m apart. What is the speed of the progressive waves?

Question # 10

Time period of simple pendulum is independent of

Question # 11

If the displacement of a body executing S.H.M is plotted against time, then the curve is known as

Question # 12

When a mass 'm' is pulled slowly, the spring stretches by an amount xo, then the work done will be

Question # 13

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

Question # 14

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

Question # 15

What is frequency of radio waves transmitted by a station, if the wavelength of those waves is 300 m?

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 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
2 When a wave is travels from one place to another, it transfers:
A. Matter
B. Energy
C. Momentum
D. Both B and C
3 Such oscillations in which the amplitude decreases steadily with time, are called
A. resonance
B. force oscillations
C. large oscillations
D. damped oscillations
4 When temperature increase, the frequency of a tuning fork
A. Increases
B. Decreases
C. Remains same
D. Increase or decreases depending on the material
5 A wave, which transfer energy by moving away from the source of disturbance is called a
A. progressive wave
B. travelling wave
C. both of them
D. none of them
6 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
7 The restoring force always directed towards the
A. extreme position
B. mean position
C. both of them
D. none of them
8 When an oscillatory motion repeats itself, then this type of motion is called
A. vibratory motion
B. constant motion
C. fixed motion
D. periodic motion
9 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
10 Which of the following changes at an antinode in a stationary wave?
A. Density only
B. Pressure only
C. Both pressure and density
D. Neither pressure nor density

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