Question
Physics Question on Ray optics and optical instruments
In optical 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
Answer
greater than that of the cladding
Explanation
Solution
In optical fibres, the refractive index of the core is greater than that of the cladding.