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In an optical fibre ,the refractive inde...

In an optical fibre ,the refractive index of the core material is

A

less than R.I. of cladding

B

more than R.I. of cladding

C

equal to R.I. of cladding

D

halfed to R.I. of cladding

Text Solution

Verified by Experts

The correct Answer is:
B
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Knowledge Check

  • In opticle fibres,the refractive index of the core is

    A
    greater than that of the cladding
    B
    equal to that of the cladding
    C
    smaller than that of the cladding
    D
    independent of that of the cladding

  • In an optical fibre ,the refractive indices of the core and the cladding are given by n_(1) and n_(2) respectively . Light can travel through the optical fibre if

    A
    `n_(1) = n_(2)`
    B
    `n_(1) lt n_(2)`
    C
    `n_(1) gt n_(2)`
    D
    `n_(1) = (n_(2))/(3)`

  • In optical fibre refractive index of core is

    A
    less than R.I of cladding
    B
    more than R.I of cladding
    C
    equal to R.I. of cladding
    D
    half of R.I. of cladding

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