More Classes
5th Class
6th Class
7th Class
8th Class
9th Class
10th Class
11th Class
12th Class
NAT I
NAT II
CSS
IQ
General Knowledge
MDCAT
ECAT
GAT General
GAT Subject
Other Links
Go to Home
Online Tests
ECAT Pre General Science Physics Chapter 8 Waves Online Test MCQs With Answers
Question # 1
A physical system under going forced vibrations is known as
Choose an answer
Simple harmonic oscillator
Compound harmonic oscillator
Physical harmonic oscillator
driven harmonic oscillator
Previous
Skip
Next
Question # 2
Longitudinal waves are also called:
Choose an answer
Congressional waves
Transverse waves
Radio waves
None of them
Previous
Skip
Next
Question # 3
Smaller the damping, the resonance will be
Choose an answer
more flat
more sharp
both of them
none of them
Previous
Skip
Next
Question # 4
If a freely oscillating system is subjected to an external force, then
Choose an answer
free vibrations will take place
the body will move with its natural frequency
forced vibrations will take place
none of them
Previous
Skip
Next
Question # 5
The damping depends upon the
Choose an answer
amplitude
sharpness
both of them
none of them
Previous
Skip
Next
Question # 6
When two progressive waves of nearly same frequencies superimpose and give rise to beats, then
Choose an answer
Frequency of beat changes with time
Frequency of beat changes with location of observer
All particles of medium vibrate simple harmonically with frequency equal to the difference between frequencies of component waves
Amplitude of vibration of particles at any point changes simple harmonically with frequency equal to difference between two component waves
Previous
Skip
Next
Question # 7
The velocity of sound in air depends upon
Choose an answer
Density and elasticity of gas
Pressure
Wavelength
Amplitude and frequency of sound
Previous
Skip
Next
Question # 8
Of the following, the option ______ reminds of longitudinal waves.
Choose an answer
Sound waves
Heat waves
Electromagnetic waves
Light waves
Previous
Skip
Next
Question # 9
When a body is pulled away from its rest or equilibrium position and then released, the body oscillates due to
Choose an answer
applied force
momentum
restoring force
none of them
Previous
Skip
Next
Question # 10
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
Choose an answer
Has a definite pitch
Has a definite quality
Has a definite capacity
Can penetrate the wall
Previous
Skip
Next
Question # 11
The portion of the water above its mean level forms a:
Choose an answer
Crest
Trough
Both A and B
None of these
Previous
Skip
Next
Question # 12
An object undergoes S.H.M has maximum speed when its displacement from the mean position is
Choose an answer
maximum
zero
half of the maximum value
one third of the maximum value
Previous
Skip
Next
Question # 13
When a mass 'm' is pulled slowly, the spring stretches by an amount x
0
,then the average force would be
Choose an answer
F= Kx
0
F=1/2Kx
0
F=2Kx
0
F=4Kx
0
Previous
Skip
Next
Question # 14
The total energy of spring mass system is
Choose an answer
zero
changing with time
constant
none of them
Previous
Skip
Next
Question # 15
The waves produced in a microwave oven have wavelength.
Choose an answer
12 mm
12 cm
12 m
12 mm
Previous
Skip
Next
Question # 16
Waves transport energy
Choose an answer
without transport energy
with matter
both of them
none of them
Previous
Skip
Next
Question # 17
If the length of a simple pendulum is 0.25 m its time period would be
Choose an answer
1.0 s
2.0 s
3.0 s
4.0 s
Previous
Skip
Next
Back