Q121 / 150 · MHT CET 2022 (05 Aug Shift 1) · Physics

A diffraction pattern is obtained by making blue light incident on a narrow slit. If blue light is replaced by red light then

A
there is no change in diffraction pattern.
B
diffraction band become broader.
Correct answer
C
diffraction bands become broader.
D
diffraction bands become narrower.

Solution

The correct option is (C). Concept Based: The width of the diffraction bands is directly proportional to the wavelength thus, a minor broadening is observed.

Hence, the correct answer is option: 'C'.

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