ECAT Pre Computer Science Chapter 8 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 8 Waves

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ECAT Physics Chapter 8 Waves

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Question # 1

Resonance occurs when one of the natural frequencies of vibration of the forced or driven harmonic oscillator

Question # 2

Decibel is unit of

Question # 3

A simple pendulum consists of a

Question # 4

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

Question # 5

The principle of superposition states that

Question # 6

Two sources of sound are said to be coherent if

Question # 7

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

Question # 8

SI unit of frequency is

Question # 9

Transverse waves can be set up:

Question # 10

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

Question # 11

The waves produced in a microwave oven have frequency

Question # 12

The time period of pendulums of different lengths would be

Question # 13

If the mass of the simple pendulum becomes double, its time period

Question # 14

Energy is not carried by

Question # 15

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

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 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
2 The speed of sound in a medium depends on
A. The elastic property but not on the inertia property
B. The inertia property but not on the elastic property
C. The elastic property as well as the inertia property
D. Neither the elastic property nor the inertia property
3 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
4 Mechanical waves on the surface of a liquid are
A. Transverse
B. Longitudinal
C. Torsional
D. both transverse and longitudinal
5 When the bob of simple pendulum is at extreme position, its K.E. will be
A. maximum
B. minimum
C. zero
D. all of them
6 In transverse waves, the individual particles of the medium move:
A. In circles
B. Perpendicular to the direction of level
C. Parallel to the direction of level
D. None of these
7 When temperature increase, the frequency of a tuning fork
A. Increases
B. Decreases
C. Remains same
D. Increase or decreases depending on the material
8 In case of mechanical waves, we study the motion of
A. a single particle
B. collection of particle
C. any one of them
D. none of them
9 What is frequency of radio waves transmitted by a station, if the wavelength of those waves is 300 m?
A. 1 MHz
B. 10 Hz
C. 1 GHz
D. 100000 Hz
10 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

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