ECAT Pre Computer Science Chapter 8 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 8 Waves

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ECAT Physics Chapter 8 Waves

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Question # 1

Longitudinal waves are also called:

Question # 2

One complete round trip of the body about its mean position is called

Question # 3

transverse wave motion is possible in:

Question # 4

At a certain instant a stationary transverse wave is found to have maximum kinetic energy. The appearance of string of that instant is

Question # 5

The restoring force always directed towards the

Question # 6

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

Question # 7

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

Question # 8

The bob of a simple pendulum is suspended by

Question # 9

When a body moves to and fro motion, this type of motion is called

Question # 10

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

Question # 11

Angular frequency 'w' is basically a characteristics of

Question # 12

The velocity of sound at same temperature is maximum in

Question # 13

In a resonance situation the amplitude of the motion may become extra ordinarily large, if

Question # 14

The frequency of free vibrations is known as

Question # 15

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

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Sr.# Question Answer
1 A string is stretched between two points and is plucked at right angles to its length, the vibration produced is:
A. Longitudinal wave
B. Transverse wave
C. No vibration at all
D. None of them
2 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
3 If the length of a simple pendulum is 0.25 m its time period would be
A. 1.0 s
B. 2.0 s
C. 3.0 s
D. 4.0 s
4 The time period of pendulums of different lengths would be
A. same
B. different
C. both of them
D. none of them
5 The damping depends upon the
A. amplitude
B. sharpness
C. both of them
D. none of them
6 If the length of second pendulum becomes four times then its time period will become
A. Four time
B. Two times
C. Six times
D. Eight times
7 The natural frequency of a pendulum which is vibrating freely, depends upon its
A. mass
B. length
C. material
D. all of them
8 Which one of the following elasticizes is possessed by fluids:
A. Young's elastic modulus (length)
B. Bulk elastic modulus (volume)
C. Modulus of rigidity (shape)
D. None of these
9 The phase determines the
A. displacement
B. amplitude
C. frequency
D. state of motion of vibrating body
10 When a body is pulled away from its rest or equilibrium position and then released, the body oscillates due to
A. applied force
B. momentum
C. restoring force
D. none of them

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