DIFFRACTION OF LIGHT

DIFFRACTION OF LIGHT

12th Grade

10 Qs

quiz-placeholder

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DIFFRACTION OF LIGHT

DIFFRACTION OF LIGHT

Assessment

Quiz

Physics

12th Grade

Hard

Created by

Prem Kumari Narang

Used 1+ times

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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A diffraction pattern is obtained by using a beam of red light. What will happen if the red light is replaced by the blue light?

Bands will narrower and crowd full together

Bands become broader and further apart

No change will take place

Bands disappear

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Angular width of central maximum of a diffraction pattern on a single slit does not depend upon:

Distance between slit and source

Wavelength of light used

Width of the slit

Frequency of light used

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Yellow light is used in

single slit diffraction experiment with slit width 0.6 mm. If yellow light is

replaced by X-rays then the pattern will reveal:

That the central maxima is narrower

No diffraction pattern

More number of fringes

Less number of fringes

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Red light is generally

used to observe diffraction pattern from single slit. If blue light is used

instead of red light, then diffraction pattern:

Will be clearer

Will contract

Will expanded

Will not be visualized

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The diffraction effect

can be observed in:

Only sound waves

Only light waves

Only ultrasonic waves

Sound as well as light waves

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Diffraction effects are

easier to notice in the case of sound waves than in the case of light waves

because:

Sound waves are longitudinal

Sound is perceived by the ear

Sound waves are mechanical waves

Sound waves are of longer wavelength

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A parallel monochromatic beam of light is incident normally on a narrow slit. A diffraction pattern is formed on a screen placed perpendicular to the direction of incident beam. At the first maximum of the diffraction pattern the phase difference between the rays coming from the edges of the slit is:

Zero

π

π/2

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