In for a calcite crystal, μ0 and μe are the refractive indices of the crystal for O-ray and E-ray respectively, then along the optic axis of the crystal
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a
μ0=μe
b
μ0>μe
c
μ0<μe
d
μ0<<μe
answer is A.
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Detailed Solution
Calcite is a negative crystal . Negative crystals are crystals in which refractive index corresponding to E-Ray (μe) is less than the refractive index corresponding to O-Ray ( μ0) in all directions except for Optic axis. So , along the optic axis μ0=μe