First slide

Diffraction of light-Wave Optics

Question

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

Easy

A

Bands will narrower and crowd full together
B

Bands become broader and further apart
C

No change will take place
D

Bands disappear

Solution

$Band width \propto λ, ∵ λ_{blue} < λ_{red,} hence for blue light the diffraction bands becomes narrower and crowded together .$

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