NCERT Physics Class 12 Exemplar Ch 15 Communication Systems Part 2
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Short Answer
Q 21 Figure shows a communication system. What is the output power when input signal is of?
Figure Shows a Communication System
Ans:
Loss suffered in transmission path
Total amplifier gain
Overall gain of signal
Q 22 A TV transmission tower antenna is at a height of. How much service area can it cover if the receiving antenna is (i) at ground level, (ii) at a height of? Calculate the percentage increase in area covered in case (ii) relative to case (i).
Ans:
(i) Range
Area covered
ii) Range
Area covered
Percentage increase in area