Question # 1

The amplitude of sound wave determines its

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Pitch

Loudness

Reverberation

Interference

Newton's rings are formed due to

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Diffraction of light

Interference of light

Polarization of light

Reflection of light

The use fulness of x rays is largely due to their

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Mass

Density

Penetrating power

Rest mass

The phase different between the particles vibrating's between two consecutive nodes is.

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0

Lamda /2

2

2 lamda

The appearance of colures in their film is due to

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Diffraction

Dispersion

Interference

Polarization

The quality of sound

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Decreases with pitch

Varies directly as its pitch

Varies inversely as its pitch

Depends upon the overtones present there

The note of the lowest frequency is called

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beat

Overtone

Fundamental note

Harmonic note

A bat while flying determines the location and nature of object in his way by sending.

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Infrasonic waves

Ultrasonic waves

Supersonic waves

Ultraviolet waves

A sonometer or audiometer is a device based on the principle of.

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Resonance

Beats

Overtones

Harmonics

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

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Wavelength

Wave front

Velocity

All of these

A wave which consists of a single, non repetitive disturbance is called a

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Continous wave

Pulse

Longitudinal wave

Transverse wave

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

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zero

Half

Double

Unchanged

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

Polarized sunglasses decrease glare on a sunny day because they

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Completely absorb light

Block a portion of light

Have a special colour

refract light

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

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Reflection

Wedges

Refraction

Transmission

A pendulum vibrates with a time period of 1 s which range of sound is produced by it

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Audible

Infrasonic

Ultrasonci

Super sonic

A radiation spectrum which is continuously distributed over a frequency region without being broken up into lines or bands is known as.

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Continuous spectrum

Band spectrum

discrete spectra

Absorption spectrum

Velocity of sound in air at a given temperature

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Increases with increase in pressure

Is independent of the pressure

Decreases with increases in density

Increases with increase in density

Distance between two consecutive nodes or antinodes is equal to.

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Lamda /4

Lamda

Lamda /2

2 lamda

On which characteristics the loudness of sound pends upon.

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Pitch

Speed

Wavelength

Amplitude

Plane polarized light can be produce dby

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Simple reflection

Double refrraction

Scattering of light

All of these

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