Physics
NULL
Medium
Question
In multimode step index fibre the refractive index of core and cladding is____________?
A
same
B
different
C
zero
D
different with refractive index of core higher than cladding
✓ Official correct answer
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A
same
No member explanations yet for this option.
B
different
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C
zero
No member explanations yet for this option.
D
different with refractive index of core higher than cladding
No member explanations yet for this option.
Explanation
For light to be guided along a step-index fiber by total internal reflection, the core must have a higher refractive index than the surrounding cladding.
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