Question # 1

The locus of all points in a medium having the same phase of vibration is called.

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Creast

trough

Wavelength

Wave front

The dispersive power of a grating is

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Light used

Separation of lines

Frequency of light used

Independent of wavelength

Interference fringe spacing depends on

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The wavelength of light used

The distance screen from the coherent sources

Separation between the sources

All of the above

The heat frequency is the

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Sum of the two frequenceis

Produce of the two frequency

Difference of the two frequencies

Ratio of the two frequencies

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

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Continous wave

Pulse

Longitudinal wave

Transverse wave

A fringe is a path of.

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Constant amplitude

Constant phase

Same wavelength

Constant frequency

The energy transported by a wave is proportional to the square of the.

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Wavelength of the wave

Period of the wave

Amplitude of the wave

Frequency of the wave

The wave phenomenon that classifies light as a transverse wave is.

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Polarization

Diffraction

Interference

Refraction

Light wave can be polarized because they

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Are transverse in nature

Can be reflected

Have short wavelength

Have high frequncies

Ultrasonic sound waves

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Can be heard by a normal human ear

Can be heard with the help of hearing apparatus

Can be heard with the help of microphone

cannot be heard

The unit of intensity level is.

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Watt

Joule

Bel

Sabin

Which of the following forms of electromagnetic energy has the longest wavelength.

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Microwaves

Radio waves

Infrared waves

^{Visible light}

Plane polarized light can be produce dby

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Simple reflection

Double refrraction

Scattering of light

All of these

Reverberation is the

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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

All particles, of a wave front vibrate

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In same phase

In opposite phase

Upward down

Left and right

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

Ultra sonics are the

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Frequencies in the audible range

Frequencies greater than 20 Hz

Frequencies greater than 20 KHz

Frequency lower than 20 KHz

A water wave is an example of

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Electromagnetic wave

Longitudinal wave

Transverse wave

Reverberation

LASER is a device which can produce

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Monochromatic beam of light

Coherent beam of light

An intense beam of lgiht

All of these

Which is the correct statement regarding the nature of light.

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It has wave nature

It has particle nature

It has both wave and particle nature at the same time

It has wave nature sometime and particle nature at some other time.

The ratio of intensities of two sound waves is 4 : 9 what will be the ratio of their amplitudes.

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9:4

2:3

3:2

4:9

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