Q .     In Fraunhofer diffraction experiment, L is the distance between screen and the obstacle, b is the size of obstacle and A. is wavelength of incident light. The general condition for the applicability of Fraunhofer diffraction is

BITSAT 2008
A

`b^2/(L lambda) < < 2`

B

`b/(L lambda) < < 1`

C

`b^2/(L lambda) < < 1`

D

None of these

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