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An optical communication system. Having ...

An optical communication system. Having an operating wavelength `lambda` (in metres), can use only `x%` of its source frequency as its channel bandwidth. The system is to be used for trasnmitting TV signals requiring a bandwidth of F hertz. How many channels can this system transmit simultanously?

A

`lambdaF//Cx`

B

`2_(Cx)//100lambdaF`

C

` cx//50lambdaF`

D

`cx//100lambdaF`

Text Solution

Verified by Experts

The correct Answer is:
D
Optical s ource frequency `=(c)/(lambda)Hz`
Bandwidth of channel `=x% "of" (c)/(lambda)=(cx)/(100lambda)`
Number of channels.
`n=("Total bandwidth of channel")/("Bandwidth needed per channel")=(cx//100A)/(F)=(cx)/(100lambdaF)`
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