Home Physics Wave Optics Mix Light is incident normally on a diffraction …
Physics Wave Optics Mix MCQ (Single Correct)

Light is incident normally on a diffraction grating through which the first order diffraction is seen at 32 o . The second order diffraction will be seen at

A
48 o
B
64 o
C
80 o
D
There is no second order diffraction in this case

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Verified by Experts
The correct answer is:
D

For a grating

where grating element

For

This is more than 0.5. Now will be more than which is not possible.

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