Total internal reflection at the fibre wall can occur only if two cond – McqOptions

MCQOPTIONS

1.	Total internal reflection at the fibre wall can occur only if two conditions are met. One of the condition is the glass inside the fibre core must have a/an ______ index of refraction than/as the index of refraction of the material surrounding the fibre core.
A.	equal
B.	slightly higher
C.	slightly smaller
D.	slightly sharper
Answer» C. slightly smaller

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