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

EAMCET 2008
A

`b^2/(Llambda)>1`

B

`b^2/(Llambda)=1`

C

` b^2/(Llambda)<1`

D

`b^2/(Llambda)!=1`

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