1.

In an optical fibre, the diameter of the core is nearly

A. \[{{10}^{-2}}m\]
B. \[{{10}^{-4}}m\]
C. \[{{10}^{-8}}m\]
D. \[{{10}^{-10}}m\]
Answer» C. \[{{10}^{-8}}m\]


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