If $μ_{1}$ and $μ_{2}$ are the refractive indices of the materials of core and cladding of an optical fibers respectively, then the loss of light due to its leakage can be minimised by having:

$μ_{1} > μ_{2}$

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$μ_{1} < μ_{2}$

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$μ_{1} = μ_{2}$

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None of these

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Solution

The correct option is A
$μ_{1} > μ_{2}$

To minimise the loss of light there should be total internal reflection of light inside the optical fibre. Total internal reflection occurs only when the light travels from denser medium to rarer medium and hence option (a) is correct.

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If μ1 and μ2 are the refractive indices of the materials of core and cladding of an optical fibers respectively, then the loss of light due to its leakage can be minimised by having:

The correct option is A μ1>μ2 To minimise the loss of light there should be total internal reflection of light inside the optical fibre. Total internal reflection occurs only when the light travels from denser medium to rarer medium and hence option (a) is correct.

If $μ_{1}$ and $μ_{2}$ are the refractive indices of the materials of core and cladding of an optical fibers respectively, then the loss of light due to its leakage can be minimised by having:

The correct option is A
$μ_{1} > μ_{2}$

To minimise the loss of light there should be total internal reflection of light inside the optical fibre. Total internal reflection occurs only when the light travels from denser medium to rarer medium and hence option (a) is correct.