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If mu and mu(2) are the refractive indic...

If `mu` and `mu_(2)` are the refractive indices of the materials of core and cladding of an optical fibre, then loss of light due to its leakage can be minimised by having

A

`mu_(1)gtmu_(2)`

B

`mu_(1)ltmu_(2)`

C

`mu_(1)=mu_(2)`

D

none of these

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A
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