WBCHSE HS Vocational Telecom Practice Questions - West Bengal Council Of Higher Secondary Education Class 12 Vocational Telecommunication Exam

If an amplifier increases an input power of 1 mW to an output power of 100 mW, what is the power gain in decibels (dB)?

10 dB 20 dB 30 dB 100 dB

Correct Answer:

20 dB

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