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

There is no net transfer of energy by particle of medium in

Question # 2

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

Question # 3

If a simple pendulum is shifted from karachi to K-2 cliff, its time period

Question # 4

The example of mechanical wave is

Question # 5

The velocity of sound is greatest in

Question # 6

Data transmitted along glass-fiber cables is in the form of pulses of monochromatic red light each of duration 2.5 ns. Which of the following is the best estimate of the number of wavelength in each pulse?

Question # 7

Energy is not carried by

Question # 8

Which one is not produced by sound waves in air?

Question # 9

The natural frequency of a pendulum which is vibrating freely, depends upon its

Question # 10

Which waves are used in sonography?

Question # 11

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

Question # 12

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

Question # 13

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

Question # 14

In the same medium, velocity of the wave:

Question # 15

A body is executing free vibrations when it oscilates

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 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
2 In the formula for finding the speed of waves in the spring, unit of m in SIn units is:
A. kg
B. kg-meter
C. kg/meter
D. Meter/kg
3 Which type of wave can be set up in solids
A. longitudinal waves
B. transverse waves
C. both of them
D. none of them
4 A second's pendulum is a pendulum whose time period is
A. 1 second
B. 2 seconds
C. 3 seconds
D. 4 seconds
5 Fluids can transmit:
A. Transverse wave
B. Compressional wave
C. Both of them
D. None of them
6 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
7 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
8 SI unit of frequency is
A. second
B. hertz
C. revolution
D. vibrations/sec
9 Smaller the damping, greater will be the
A. frequency
B. wavelength
C. amplitude
D. none of them
10 The waves which propagate out in space due to oscillation of electric and magnetic fields are known as
A. e.m. waves
B. mechanical waves
C. sound waves
D. water waves

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