Question # 1

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

The polarization of an electromagnetic wave is determined by

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The magnetic field

The electric field

The electric and magnetic fields

The field direction of propagation of electromagnetic waves

The unit of intensity of sound waves is.

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W m-1

W m-2

N m-1

N m-2

Two waves which combine to produce a resultant by reinforcing each other of every point demonstrate.

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Destructive interference

constructive interference

Refraction

polarization

Which of the following are examples of transverse and a longitudinal wave.

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Radio and sound waves

Radio and light waves

Light and water ripples

Light and sound waves

For how long the sensation of sound persists in our brain.

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0.1 s

0.2 s

0.3 s

0.4 s

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

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64

128

256

512

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

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20 cm s-1

50 cm s-1

60 cm s-1

100 cm s-1

Diffraction is a special type of.

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Polarization

Interference

Dispersion

Scattering

The wavelength is the distance along the line of wave propagation between two successive particles which have equal

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Velocities

Phases

Amplitude

Displacements

A water wave is an example of

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Electromagnetic wave

Longitudinal wave

Transverse wave

Reverberation

Which of the following is a method of energy transfer.

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Conduction

Wave motion

Radiation

All of these

The shape of wave front depends on

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Density of medium

Shape of medium

Viscosity of medium

Length of medium

Which of the following refers to the distance from crest to crest of a wave.

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Frequency

Wavelength

Amplitude

Period

For polarization , the direction of oscillation has to be perpendicular to the direction of travel sound waves are longitudinal waves so they cannot be.

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Reflected

Deflected

Diffracted

polarized

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

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Much greater than in air

Slightly les than in air

The same as in air

Smell and usually negligible

All particles, of a wave front vibrate

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In same phase

In opposite phase

Upward down

Left and right

Which property of waves is independent of the others.

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Amplitude

Velocity

Frequency

Wavelength

A water wave is an example of

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Electromagnetic wave

Longitudinal wave

Transverse wave

Reverberation

The loudness of a sound depends on its

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Wavelength

Frequency

Wave amplitude

Regularity

Light from the sun reaches the earth in

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Spherical wave fronts

Cylindrical wave fronts

Plane wave fronts

Packets

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