Differential refractive index is used in core to minimise loss due to

Evanscent field

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diffraction

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polarisation

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interference

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Solution

The correct option is C diffraction
To minimise losses due to diffraction, the refractive index of core is gradually reduce till core-cladding interface

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Differential refractive index is used in core to minimise loss due to

The correct option is C diffractionTo minimise losses due to diffraction, the refractive index of core is gradually reduce till core-cladding interface

The correct option is C diffraction
To minimise losses due to diffraction, the refractive index of core is gradually reduce till core-cladding interface