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

A second's pendulum is a pendulum whose time period is

Question # 2

At 'resonance' the transfer of energy from deriving source to the oscillator is

Question # 3

The waves which propagate out in space due to oscillation of electric and magnetic fields are known as

Question # 4

Fidelity refers to

Question # 5

The expression of Hook's law is

Question # 6

It two waves of amplitude 'a' produce a resultant wave of amplitude a, then the phase difference between them will be

Question # 7

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

Question # 8

The velocity of sound at same temperature is maximum in

Question # 9

If F=0.04 N and X=4 cm then K=

Question # 10

A physical system under going forced vibrations is known as

Question # 11

The number of vibrating body at any instant from its equilibrium position is called

Question # 12

A swing has

Question # 13

In the production of beats by 2 waves of same amplitude and nearly same frequency, the maximum intensity to each of the constituent waves is

Question # 14

To hear a clear echo, the reflecting surface must be at a minimum distance of

Question # 15

Which one of the following elasticizes is possessed by fluids:

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 In stationary waves
A. Energy is uniformly distributed
B. Energy is minimum at nodes and maximum at antinodes
C. Energy is maximum at nodes and minimum at antidotes
D. Alternating maximum and minimum energy producing at nodes and antinodes
2 A swing has
A. one natural frequency
B. two natural frequencies
C. three natural frequencies
D. four natural frequencies
3 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
4 A stationary sound wave has frequency 165 Hz (speed of sound in air = 330 m/s) then distance between two consecutive nodes is
A. 2 m
B. 1 m
C. 0.5 m
D. 4 m
5 A physical system under going forced vibrations is known as
A. Simple harmonic oscillator
B. Compound harmonic oscillator
C. Physical harmonic oscillator
D. driven harmonic oscillator
6 The frequency of free vibrations is known as
A. free frequency
B. forced frequency
C. natural frequency
D. un-natural frequency
7 Crests and troughs are formed in:
A. Longitudinal waves
B. Transverse waves
C. Both of these
D. None of these
8 When temperature increase, the frequency of a tuning fork
A. Increases
B. Decreases
C. Remains same
D. Increase or decreases depending on the material
9 There is no net transfer of energy by particle of medium in
A. Longitudinal wave
B. Transverse wave
C. Progressive wave
D. Stationary wave
10 In the resonance condition, the amplitude of the oscillator becomes
A. very large
B. very small
C. zero
D. any one of them

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