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In a Fraunhofer diffraction at single sl...

In a Fraunhofer diffraction at single slit of width d with incident light of wavelength `5500 Å`, the first minimum is observed, at angle `30^(@)`. The first secondary maximum is observed at an angle `theta` =

A

`sin ^(-1)(1)/(sqrt(2))`

B

`sin^(-1)(1)/(4)`

C

`sin^(-1)(3)/(4)`

D

`sin ^(-1)(sqrt(3))/(2)`

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The correct Answer is:
C
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