ECAT Pre General Science Physics Chapter 8 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 8 Waves

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ECAT Pre General Science Physics Chapter 8 Waves

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Question # 1

Which of the following is the longitudinal waves?

Question # 2

The loudness and pitch of a sound note depends on

Question # 3

Example of progressive wave is

Question # 4

The maximum displacement of a body on either side of its equilibrium position is called

Question # 5

The damping depends upon the

Question # 6

It two waves of amplitude 'a' produce a resultant wave of amplitude a, then the phase difference between them will be

Question # 7

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

Question # 8

Smaller the damping, greater will be the

Question # 9

Time period of simple pendulum is independent of

Question # 10

The velocity of sound in air depends upon

Question # 11

The restoring force always directed towards the

Question # 12

Associated with the motion of a driven harmonic oscillator, there is a very striking phenomenon, know as

Question # 13

In case of mechanical waves, we study the motion of

Question # 14

Such oscillations in which the amplitude decreases steadily with time, are called

Question # 15

The example of mechanical wave is

Question # 16

The weight 'mg' of the bob is resolved into

Question # 17

The waves which propagate by the collision of material particles are known as

Question # 18

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

Question # 19

Of the following, the option ______ reminds of longitudinal waves.

Question # 20

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

Question # 21

When temperature increase, the frequency of a tuning fork

Question # 22

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

Question # 23

Example of vibratory motion is

Question # 24

Two sources of sound are said to be coherent if

Question # 25

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

Question # 26

The square of 0.4 is:

Question # 27

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

Question # 28

A heavily damped system has a fairly

Question # 29

If two waves of length 50 cm and 51 cm produced 12 beats per second, the velocity of sound is

Question # 30

Time period of a simple pendulum depends upon the

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 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
2 While describing the motion of a simple pendulum, the frictional effects are
A. taken into account
B. completely ignored
C. partially ignored
D. none of them
3 When temperature increase, the frequency of a tuning fork
A. Increases
B. Decreases
C. Remains same
D. Increase or decreases depending on the material
4 The waves produced in a microwave oven have frequency
A. 2450 Hz
B. 2450 K Hz
C. 2450 M Hz
D. 2450 G Hz
5 Example of vibratory motion is
A. mass suspended from a spring
B. a bob of simple pendulum
C. mass attached to a spring placed
D. all of them
6 There is no net transfer of energy by particle of medium in
A. Longitudinal wave
B. Transverse wave
C. Progressive wave
D. Stationary wave
7 As the bob of the pendulum moves to and fro which of the force is experienced by the bob
A. its weight
B. tension in the string
C. viscous drag force by air
D. all of them
8 The time period of pendulums of different lengths would be
A. same
B. different
C. both of them
D. none of them
9 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
10 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

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