EASY
12th ICSE
IMPORTANT
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Write the formula for the width of the central maximum in Fraunhofer diffraction pattern of a single slit as observed on a screen.

Important Questions on Diffraction of Light

EASY
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 8 - Diffraction of Light>QUESTIONS>Q 7
In a straight-slit diffraction pattern, how does the angular width of central maximum change, when the slit width is increased?
EASY
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 8 - Diffraction of Light>QUESTIONS>Q 7
In a straight-slit diffraction pattern, how does the angular width of central maximum change, when light of smaller wavelength is used?
EASY
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 8 - Diffraction of Light>QUESTIONS>Q 8
State whether diffraction of light takes place at the two slits in the Young's interference experiment?
EASY
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 8 - Diffraction of Light>QUESTIONS>Q 9

What will be the effect on the width of the central bright fringe in the diffraction pattern of a single-slit if:

(i) monochromatic light of smaller wavelength is used,

(ii) slit is made narrower?

EASY
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 8 - Diffraction of Light>QUESTIONS>Q 1
State any one difference between interference of light and diffraction of light.
EASY
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 8 - Diffraction of Light>QUESTIONS>Q 2
State one similarity and one difference between interference and diffraction of light.
EASY
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 8 - Diffraction of Light>QUESTIONS>Q 3
Ray optics assumes that light travels in straight lines.  Light, however, bends round the edges of obstacles and apertures (diffraction). Yet, ray optics correctly locates images in optical instruments. Justify the validity of ray optics.
EASY
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 8 - Diffraction of Light>QUESTIONS>Q 4
What is meant by diffraction of light?