Modern Physics 7 Question 14
14. 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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Solution:
- 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 $1500 nm$.
