Question # 1

Sound waves in air always

Choose an answer

Longitudinal

Transverse

Stationary

Electromagnetic

Ultra-violet rays differ from X-rays in that they

Choose an answer

Cannot be diffracted

Cannot be polarized

Have a lower frequency

Are deviated when they pass through a magnetic field

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

Choose an answer

greater than the frequency of applied force

equal to the frequency of applied force

less than the frequency of applied force

all of them

A string is stretched between two points and is plucked at right angles to its length, the vibration produced is:

Choose an answer

Longitudinal wave

Transverse wave

No vibration at all

None of them

Example of progressive wave is

Choose an answer

transverse waves

longitudinal waves

both of them

none of them

The total energy of spring mass system is

Choose an answer

zero

changing with time

constant

none of them

Decibel is unit of

Choose an answer

Intensity of light

x-ray radiation capacity

sound loudness

Energy of radiation

Wave disturbances may also come in a concentrated bundle, like shock wave from an aeroplane flying at

Choose an answer

subsonic speed

sonic speed

super sonic speed

any one of them

If we increase the length of a simple pendulum four times, its time period will become

Choose an answer

2 times

3 times

4 times

6 times

The vibrations of factory floor caused by the running of heavy machinery is an example of

Choose an answer

free vibration

natural vibrations

forced vibrations

all of them

Velocity of sound in vacuum (in m/s) is

Choose an answer

330

1000

156

0

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

Choose an answer

Mechanical waves

Electromagnetic waves

Matter waves

All of them

Which of the following is the longitudinal waves?

Choose an answer

Sound waves

Waves on plucked string

Water waves

Light waves

In solids, only following type/s of wave can travel:

Choose an answer

Transverse

Longitudinal

Both A and B

None of them

Acceleration of the mass at any instant is given by

Choose an answer

a=k/m x

a= - m/k x

a = - k/m x

a=m/k x

More Classes

Other Links

Physics ECAT Pre Engineering 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