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

Which of the following changes at an antinode in a stationary wave?

Question # 2

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

Question # 3

In compressional wave,the layer of medium having reduced pressure is called:

Question # 4

Which one of the following wave motions is transverse:

Question # 5

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

Question # 6

A swing has

Question # 7

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

Question # 8

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

Question # 9

When a mass 'm' is pulled slowly through a distance 'xo' , the elastic potential energy of the spring would be

Question # 10

A heavily damped system has a fairly

Question # 11

Laplace formula is derived from

Question # 12

In the resonance condition, the amplitude of the oscillator becomes

Question # 13

Shock absorber of the car is an example of

Question # 14

When a body is pulled away from its rest or equilibrium position and then released, the body oscillates due to

Question # 15

SI unit of frequency is

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 The total energy of spring mass system is
A. zero
B. changing with time
C. constant
D. none of them
2 The velocity of sound in air not effected by changes in
A. Moisture contents in air
B. Temperature of air
C. The atmosphere pressure
D. The composition of air
3 The frequency of free vibrations is known as
A. free frequency
B. forced frequency
C. natural frequency
D. un-natural frequency
4 Which of the following is not mechanical wave?
A. Sound wave
B. Light wave
C.
wave produced in spring
D. None of them
5 The vibrations of factory floor caused by the running of heavy machinery is an example of
A. free vibration
B. natural vibrations
C. forced vibrations
D. all of them
6 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
7 The waves which propagate by the collision of material particles are known as
A. e.m. waves
B. mechanical waves
C. light waves
D. microwaves
8 If a wave can be polarized, it must be
A. An electromagnetic wave
B. A longitudinal wave
C. A progressive wave
D. A transverse wave
9 The waves produced in a microwave oven have wavelength.
A. 12 mm
B. 12 cm
C. 12 m
D. 12 mm
10 Energy is dissipated and consequently the energy mass system do not oscillate indefinitely because of
A. very small energy
B. very large energy
C. frictional forces
D. acceleration due to gravity

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