NCERT Physics Class 12 Exemplar Ch 15 Communication Systems Part 2

Download PDF of This Page (Size: 158K)

Short Answer

Q 21 Figure shows a communication system. What is the output power when input signal is of ?

Figure shows a communication system.

Figure Shows a Communication System.

Figure shows a communication system.


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).


(i) Range

Area covered

ii) Range

Area covered

Percentage increase in area

Get unlimited access to the best preparation resource for CBSE/Class-12 Economics- fully solved questions with step-by-step exaplanation- practice your way to success.

Developed by: