Question # 1

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

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0 ^o

60 ^o

90 ^o

180 ^o

X -rays are similar in nature to.

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Alpha particles

Beta particles

Gama rays

Photons

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

The length of piano wire is 1 m and mass is 20 g and it is stretched by a fore of 200 N the fundamental frequency of sound waves produced by the piano will be

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50 Hz

100 Hz

150 HZ

250 Hz

Which of the following is a method of energy transfer.

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Conduction

Wave motion

Radiation

All of these

Which of the following is a mechanical wave.

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X rays

Radio waves

Sound wave

Light wave

Which physical properties is most responsible for resonance.

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Frequency

Intensity

Pitch

Loundness

A water wave is an example of

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Electromagnetic wave

Longitudinal wave

Transverse wave

Reverberation

If a rope in a hand makes 10 oscillations after every 2 s. the frequency of the wave is.

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2 C s-1

5 C s-1

10 C s-1

20 C s-1

When amplitude of a wave becomes double its energy becomes.

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Xero

Double

4 times

6 times

The interference between two sounds of slightly differed frequency is

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shock wave

Beats

Sonic boom

Doppler's effect

A girl standing 150 m in front of tall building fires a pistol A boy standing 350 m behind her hears two bangs 1 s apart from this information what is the speed of sound in air.

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150 m s-1

300 m s-1

280 m s-1

330 m s-1

With the increase of temperature, teh pitch of an organ pipe

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Increase

Descrease

Remain the same

May increase or decrease

What is an elementary particle, the basic unit of light and all other form of electromagnetic radiation.

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Phonon

Photon

Neutron

Proton

Beats are the result of.

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Interference

Doppler's effect

Ultrasound

Polarization

The central ring is bright in case of Newton's rigs produced by

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Reflection

Wedges

Refraction

Transmission

Palaroids can be used

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To control headlight glare in right driving

To determine the concentration of the optically active substances

In curtain less windows to adjust the amount of light

all of the above

A sheet of transparent material with fine equality spaced lines ruled parallel on its surface is called.

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Interferometer

Grating element

ruler

Patch

Blue colour of sky is due to.

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Diffraction

Reflection

Polarization

Scattering

A sound wave is an example of

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Transverse wave

longitudinal waves

Hair wave

Stationary wave

Fringe spacing in double slit experiment can be increased by decreasing.

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Wavelength of light

Width of slits

Slite separation

Distance between the slits and screen

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

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