Question # 1

Beats occurs because of.

Choose an answer

Reflection

Refraction

Interference

Doppler's effect

Reverberation is the

Choose an answer

Presence of large number of overtones

presence of harsh and discordant notes

Presence of ultrasonic vibrations

Persistence of audible sound after the source has stopped

Light of passing through a polaroid is

Choose an answer

Plane polarized

Unpolarized

Circularly polarized

Elliptically polarized

When light enters glass from air it suffers a change in.

Choose an answer

Wavelength

Wave front

Velocity

All of these

Two waves of the same frequency and amplitude travelling in opposites directions along the same path in the same medium produce.

Choose an answer

Stationary waves

Transverse wave

Longitudinal waves

Compressional waves

A sound wave is an example of

Choose an answer

Transverse wave

longitudinal waves

Hair wave

Stationary wave

Increase in velocity of sound in air for 1 ^oC rise in temperature is.

Choose an answer

0.61 m s-1

1.61 m s-1

2.00 m s-1

61.0 m s-1

According to Huygen's principle

Choose an answer

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 note of the lowest frequency is called

Choose an answer

beat

Overtone

Fundamental note

Harmonic note

The frequency of the fundamental mode of transverse vibration of a stretched wire 1,000 mm long is 256 Hz When the wire is shortened to 400 mm at the same tension

Choose an answer

640 Hz

680 Hz

720 Hz

780 Hz

In solid and liquids the variation of the speed of sound with temperature is.

Choose an answer

Much greater than in air

Slightly les than in air

The same as in air

Smell and usually negligible

The amplitude of sound wave determines its

Choose an answer

Pitch

Loudness

Reverberation

Interference

Stationary waves only a discrete set of frequencies are set up in a medium. This fact is called.

Choose an answer

Harmonics

Overtones

Quantization of frequencies

Superposition of frequencies

Air bubble in water shines because of

Choose an answer

Reflection

Refraction

Diffraction

Total internal reflection

A large ripple tank with a vibrator working at a frequency of 30 Hz produce 25 complete waves in a distance of 50 cm. The velocity of the wave is.

Choose an answer

9.53 cm s-1

60 cm s-1

750 cm s-1

1500 cm s-1

The fundamental frequency of a sound source is 256 Hz. What is the frequency of the first harmonic.

Choose an answer

64

128

256

512

Which of the following cannot be polarized.

Choose an answer

Ultraviolet rays

Radio waves

T.V waves

Sound waves

Electromagnetic waves transmit.

Choose an answer

Energy only

Momentum only

Energy and momentum

Light

In the experiment of production of X rays the anti cathode should be bombarded with.

Choose an answer

A particles

Beta particles

Electrons

Protons

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

Choose an answer

0 ^o

60 ^o

90 ^o

180 ^o

LASER is a device which can produce

Choose an answer

Monochromatic beam of light

Coherent beam of light

An intense beam of lgiht

All of these

More Classes

Other Links

PPSC Physics Chapter 5 Waves and Wave Properties of Light 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

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer