Question # 1

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

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

Choose an answer

Compression

Elasticity

Node

Rarefaction

If the external driving force is periodic with a period compareable to the natural period of the oscillator, then we get

Choose an answer

diffraction

beat

interference

resonance

A heavily damped system has a fairly

Choose an answer

sharp resonance curve

flat resonance curve

both of them

none of them

The vibratory or oscillatory motion of a body is

Choose an answer

translatory motion

back and forth motion about its mean position

free all motion

circular motion

Decibel is unit of

Choose an answer

Intensity of light

x-ray radiation capacity

sound loudness

Energy of radiation

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

Choose an answer

maximum

minimum

zero

all of them

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

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

Choose an answer

Sound waves

Heat waves

Electromagnetic waves

Light waves

The phase determines the

Choose an answer

displacement

amplitude

frequency

state of motion of vibrating body

The loudness and pitch of a sound note depends on

Choose an answer

Intensity and velocity

Frequency and velocity

Intensity and frequency

Frequency and number of harmonic

The velocity of sound is greatest in

Choose an answer

Water

Air

Vacuum

Metal

The velocity of sound in air not effected by changes in

Choose an answer

Moisture contents in air

Temperature of air

The atmosphere pressure

The composition of air

Sound waves in air always

Choose an answer

Longitudinal

Transverse

Stationary

Electromagnetic

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

Choose an answer

Velocity

Frequency

Wavelength

All the above

In the resonance condition, the amplitude of the oscillator becomes

Choose an answer

very large

very small

zero

any one of them

More Classes

Other Links

ECAT Physics Chapter 8 Waves Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer