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

A heavily damped system has a fairly

Question # 2

The time period of pendulums of different lengths would be

Question # 3

In the formula for finding the speed of waves in the spring, unit of m in SIn units is:

Question # 4

Angular frequency 'w' is basically a characteristics of

Question # 5

Two sound waves of slightly different frequencies propagating in the same direction produce beats due to

Question # 6

SI unit of frequency is

Question # 7

The waves moving from a sitar to a listener in air are

Question # 8

If a wave can be polarized, it must be

Question # 9

If a freely oscillating system is subjected to an external force, then

Question # 10

The bob of a simple pendulum is suspended by

Question # 11

Fluids can transmit:

Question # 12

The wave form of S.H.M will be

Question # 13

The waves which propagate out in the space due to oscillations of electric and magnetic fields are called:

Question # 14

The loudness and pitch of a sound note depends on

Question # 15

If one end of a rubber cord is fixed with a support and the other end is wiggled by hand, the waves generated on the card are:

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 The phase determines the
A. displacement
B. amplitude
C. frequency
D. state of motion of vibrating body
2 For a body executing S. H. M, its
A. momentum remains constant
B. potential energy remains constant
C. kinetic energy remains constant
D. total energy remains constant
3 When two progressive waves of nearly same frequencies superimpose and give rise to beats, then
A. Frequency of beat changes with time
B. Frequency of beat changes with location of observer
C. All particles of medium vibrate simple harmonically with frequency equal to the difference between frequencies of component waves
D. Amplitude of vibration of particles at any point changes simple harmonically with frequency equal to difference between two component waves
4 Ultra-violet rays differ from X-rays in that they
A. Cannot be diffracted
B. Cannot be polarized
C. Have a lower frequency
D. Are deviated when they pass through a magnetic field
5 Time period of simple pendulum is independent of
A. length
B. mass
C. acceleration due to gravity
D. none of them
6 When a body moves to and fro motion, this type of motion is called
A. translatory motion
B. circular motion
C. oscillatory motion
D. all of them
7 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
8 The principle of superposition states that
A. The total displacement due to several waves is the sum of the displacement due to those waves acting individually
B. Two stationary waves superimpose to give two progressive waves
C. A diffraction pattern consists of many interference patterns superimposed on one another
D. Two progressive waves superimpose to give a stationary wave
9 The force which opposes the applied force producing the displacement in the spring is called
A. restoring force
B. periodic force
C. centripetal force
D. resistive force
10 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

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