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

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

Question # 2

The bob of a simple pendulum is suspended by

Question # 3

The total energy of spring mass system is

Question # 4

The waves produced in a microwave oven have wavelength.

Question # 5

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

Question # 6

The weight 'mg' of the bob is resolved into

Question # 7

Time period of simple pendulum is independent of

Question # 8

As the bob of the pendulum moves to and fro which of the force is experienced by the bob

Question # 9

The time required to complete on vibration is called

Question # 10

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

Question # 11

The temperature at which the speed of sound becomes double as was at 27°C is

Question # 12

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

Question # 13

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

Question # 14

Smaller the damping, the resonance will be

Question # 15

In the same medium, velocity of the wave:

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 Velocity of sound in vacuum (in m/s) is
A. 330
B. 1000
C. 156
D. 0
2 Si units of time period is
A. second
B. hertz
C. revolution
D. vibration/sec
3 Ultra-violet rays differ from X-rays in that they
A. Cannot be diffracted
B. Cannot be polarized
C. Have a lower frequency
D. Are deviated when they pass through a magnetic field
4 When half of the cycle of a body executing S.H.M is completed, then the phase of the vibration will be
A. 45°
B. 90°
C. 135°
D. 180°
5 In compressional wave,the layer of medium having reduced pressure is called:
A. Compression
B. Elasticity
C. Node
D. Rarefaction
6 At 'resonance' the transfer of energy from deriving source to the oscillator is
A. maximum
B. minimum
C. zero
D. none of them
7 If the external driving force is periodic with a period compareable to the natural period of the oscillator, then we get
A. diffraction
B. beat
C. interference
D. resonance
8 There is no net transfer of energy by particle of medium in
A. Longitudinal wave
B. Transverse wave
C. Progressive wave
D. Stationary wave
9 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
10 Time period of a simple pendulum depends upon the
A. length of the pendulum
B. acceleration due to gravity
C. none of them
D. both of them

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