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Communication — JEE physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceJEE physicsCommunication1 Mark
Question
Assertion : Diode lasers are used as optical sources in optical communication.
Reason : Diode lasers consume less energy.
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Answer

(b) In optical communication, diode laser is used to generate analog signals or digital pulses for transmission or digital pulses for transmission trough optical fibres. The advantage of diode lasers are their small size and low power input.

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