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The correct relation betweeen the angle ...

The correct relation betweeen the angle of diffraction `phi` and the glancing angle `theta` in the Davission-Germer experiment will be

A

`theta=90^(@)-(phi)/2`

B

`phi=90^(@) (theta)/(2)`

C

`theta=90^(@)-phi`

D

`phi=(90^(@)-theta)//2`

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The correct Answer is:
B
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