Modern Physics Ques 260
- The wavelength of the carrier waves in a modern optical fibre communication network is close to
(Main 2019, 8 April I)
(a) $2400 $ $nm$
(b) $1500 $ $nm$
(c) $600 $ $nm$
(d) $900 $ $nm$
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Answer:
Correct Answer: 260.(b)
Solution:
Formula:
- In optical fibre communication network, the signals are transmitted by laser light operating in range of $1310 $ $nm-1550$ $ nm$.
So, the closest value is $1500$ $ nm$.
BETA
