ECAT Pre Engineering Physics Chapter 8 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 8 Waves

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Physics ECAT Pre Engineering Chapter 8 Waves

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Question # 1

Si units of time period is

Question # 2

The weight 'mg' of the bob is resolved into

Question # 3

The waves which propagate by the collision of material particles are known as

Question # 4

SI unit of wave length is:

Question # 5

Which one of the following could be the frequency of ultraviolet radiation?

Question # 6

Such oscillations in which the amplitude decreases steadily with time, are called

Question # 7

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

Question # 8

For transmission of both transverse and longitudinal waves, we can use:

Question # 9

The waves which propagate through the oscillations of material particles are known as:

Question # 10

If the amplitude of sound is doubled and the frequency reduced to one-fourth, the intensity of sound at the same point will be

Question # 11

In solids, only following type/s of wave can travel:

Question # 12

The force which opposes the applied force producing the displacement in the spring is called

Question # 13

Crests and troughs are formed in:

Question # 14

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

Question # 15

Longitudinal waves are also called:

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 Energy is not carried by
A. Transverse progressive waves
B. Longitudinal vibration
C. Stationary waves
D. Electromagnetic
2 If the displacement of a body executing S.H.M is plotted against time, then the curve is known as
A. frequency of S.H.M
B. period of S.H.M
C. wave form
D. none of them
3 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
4 Smaller the damping, the resonance will be
A. more flat
B. more sharp
C. both of them
D. none of them
5 In the same medium, velocity of the wave:
A. Goes on increasing
B. Remains constant
C. Goes on decreasing
D. None of these
6 While describing the motion of a simple pendulum, the frictional effects are
A. taken into account
B. completely ignored
C. partially ignored
D. none of them
7 Example of vibratory motion is
A. mass suspended from a spring
B. a bob of simple pendulum
C. mass attached to a spring placed
D. all of them
8 The expression for restoring force is
A. F=ma
B. F=kx
C. F= -kx
D. Kx=ma
9 The temperature at which the speed of sound becomes double as was at 27°C is
A. 273°C
B. 0°C
C. 927°C
D. 1027°C
10 Which type of wave can be set up in solids
A. longitudinal waves
B. transverse waves
C. both of them
D. none of them

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