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Light is incident normally on a diffract...

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

A

`at 80^(0)`

B

`at 64^(0)`

C

`at 48^(0)`

D

there is no second order diffraction

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The correct Answer is:
D
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