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

The resonance will be sharp, if the amplitude decreases rapidly at a frequency

Question # 2

A stationary sound wave has frequency 165 Hz (speed of sound in air = 330 m/s) then distance between two consecutive nodes is

Question # 3

A simple pendulum consists of a

Question # 4

When a body moves to and fro motion, this type of motion is called

Question # 5

An object undergoes S.H.M has maximum acceleration when its displacement form the means position

Question # 6

The characteristic of a body executing S.H.M is that its acceleration is

Question # 7

When a wave is travels from one place to another, it transfers:

Question # 8

It is possible to recognize a person by hearing his voice even if he is hidden behind a solid wall. This is due to the fact that his voice

Question # 9

transverse wave motion is possible in:

Question # 10

The ratio of velocity of sound in air at 4 atm pressure and that at 1 atm pressure would be

Question # 11

When half of the cycle of a body executing S.H.M is completed, then the phase of the vibration will be

Question # 12

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

Question # 13

When sound waves travel from air to water which of these remains constant?

Question # 14

Progressive waves of frequency 300 Hz are superimposed in produced a system of stationary waves in which adjacent nodes are 1.5 m apart. What is the speed of the progressive waves?

Question # 15

Laplace formula is derived from

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 A wave, which transfer energy by moving away from the source of disturbance is called a
A. progressive wave
B. travelling wave
C. both of them
D. none of them
2 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
3 The square of 0.4 is:
A. Greater than 0.4
B. Smaller than 0.4
C. Equal to 0.4
D. None of them
4 The wave form of S.H.M will be
A. square wave
B. sine wave
C. rectified wave
D. saw-tooth wave
5 Associated with the motion of a driven harmonic oscillator, there is a very striking phenomenon, know as
A. waves
B. beat
C. interference
D. resonance
6 The waves produced in a microwave oven have frequency
A. 2450 Hz
B. 2450 K Hz
C. 2450 M Hz
D. 2450 G Hz
7 Through which character we can distinguish the light waves from sound waves
A. Interference
B. Refraction
C. Polarization
D. Reflection
8 When a mass 'm' is pulled slowly, the spring stretches by an amount x0,then the average force would be
A. F= Kx0
B. F=1/2Kx0
C. F=2Kx0
D. F=4Kx0
9 The number of vibrating body at any instant from its equilibrium position is called
A. displacement
B. frequency
C. amplitude
D. time period
10 When an oscillatory motion repeats itself, then this type of motion is called
A. vibratory motion
B. constant motion
C. fixed motion
D. periodic motion

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