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

Which of the following is/are example/s if mechanical waves i.e. waves generated in _______:

Question # 2

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

Question # 3

When a mass 'm' is pulled slowly through a distance 'xo' , the elastic potential energy of the spring would be

Question # 4

Smaller the damping, greater will be the

Question # 5

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 # 6

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

Question # 7

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

Question # 8

Which type of wave can be set up in solids

Question # 9

Crests and troughs are formed in:

Question # 10

The loudness and pitch of a sound note depends on

Question # 11

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 # 12

Wave disturbances may also come in a concentrated bundle, like shock wave from an aeroplane flying at

Question # 13

In case of mechanical waves, we study the motion of

Question # 14

The vibrations of factory floor caused by the running of heavy machinery is an example of

Question # 15

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

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 Time period of simple pendulum is independent of
A. length
B. mass
C. acceleration due to gravity
D. none of them
2 The vibratory motion of a body whose magnitude of acceleration is directly proportional to the magnitude of its displacement and is always directed towards the equilibrium position is called
A. rotatory motion
B. motion under gravity
C. angular motion
D. simple harmonic motion
3 The number of vibrating body at any instant from its equilibrium position is called
A. displacement
B. frequency
C. amplitude
D. time period
4 Two sound waves of slightly different frequencies propagating in the same direction produce beats due to
A. Interference
B. Diffraction
C. Polarization
D. Refraction
5 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
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 expression for restoring force is
A. F=ma
B. F=kx
C. F= -kx
D. Kx=ma
8 The waves which propagate out in the space due to oscillations of electric and magnetic fields are called:
A. Mechanical waves
B. Electromagnetic waves
C. Matter waves
D. All of them
9 Transverse waves can be set up:
A. Solids
B. Liquids
C. Gases
D. All of them
10 The velocity of sound at same temperature is maximum in
A. H2
B. N2
C. O2
D. NH3

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