First slide

Diffraction of light-Wave Optics

Question

In for a calcite crystal, $μ_{0}$ and $μ_{e}$ are the refractive indices of the crystal for O-ray and E-ray respectively, then along the optic axis of the crystal

Easy

A

$μ_{0} = μ_{e}$
B

$μ_{0} > μ_{e}$
C

$μ_{0} < μ_{e}$
D

$μ_{0} < < μ_{e}$

Solution

$C a l c i t e i s a n e g a t i v e c r y s t a l . N e g a t i v e c r y s t a l s a r e c r y s t a l s i n w h i c h r e f r a c t i v e i n d e x c o r r e s p o n d i n g t o E - R a y (μ_{e}) i s l e s s t h a n t h e r e f r a c t i v e i n d e x c o r r e s p o n d i n g t o O - R a y (μ_{0}) i n a l l d i r e c t i o n s e x c e p t f o r O p t i c a x i s . S o, a l o n g t h e o p t i c a x i s μ_{0} = μ_{e}$

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