Question # 1

Which instrument measures properties of light over a specific portion of the electromagnetic spectrum.

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Photometer

Spectrometer

Hydrometer

Lactometer

Beats are the results of.

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Diffraction of sound waves

Interference

Polarization

Timber

In a stationary wave the particle velocity at the node is

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Zero

Constant

Minimum

Maximum

Which characteristics successively increases in the musical scale.

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Pitch

Quality

Loudness

Amplitude

What will be the sound speed if the frequency is doubled.

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zero

Half

Double

Unchanged

A wave reflected from the boundary of a denser medium will have phase change

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45 ^o

60^o

90 ^o

180 ^o

The penetrating power of X rays is least with materials of.

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High mass density

High volume density

High electron density

High weight

Two tuning forks of frequencies 260 Hz and 257 Hz are sounded together the number of beats produced per seconds is.

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1

3

4

257

A water wave is an example of

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Electromagnetic wave

Longitudinal wave

Transverse wave

Reverberation

The amplitude of a vibrating body at resonance place in vacuum is.

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zero

Maximum

Minimum

Infinite

If the wavelength of a wave is 1 cm and its period is 0.02 s , velocity of the wave will be

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20 cm s-1

50 m s-1

60 cm s-1

100 cm s-1

The ripple tank is used to study various features of

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Wave phenomenon

Interferences

Doppler's effect

Reverberation

The phenomenon of beats takes place due to

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Longitudinal waves

Transverse waves

Stationary waves

Both a and b

Pitch of the sound determines

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Its shrillness

Loudness of sund

Intensity level

Quality of sound

According to Huygen's principle

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Light bends round corners

Light travels in a straight line

All points on primary wave front are considered centre of distances

Light has wave nature

The sound waves used sonography are

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Less than 20 KHz

of 20 Khz

Greater than 20 KHz

Of 20 MHz

Frequency less than 120 Hz are known as

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Infrasonic

Ultra sonics

Super sonics

Infrared

The wavelength of Pascha series lies is the

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Visible region

Ultraviolet region

Infrared region

Invisible region

When a newton's right interference pattern a viewd from above by means of reflected light , the central spot is

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Multicoloured

Alternately white and black

Bright

Dark

A polaroid is

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A red light filter

A device used for a analyzing polarized light

A device used in polarimeter

An adjustable shutter

Newton's rings are experimentally derived from the phenomenon of.

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Polarization of light

Resolution of light

Interference of light

Diffraction of light

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PPSC Physics Chapter 5 Waves and Wave Properties of Light MCQs With Answers

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