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NCERT CBSE CLASS 12 PHYSICS CHAPTER WISE MCQ

Welcome to your Chapter 15 Communication Systems MCQs

1. 
Which of the following is the purpose of the transmitter?

2. 
Which among the following can be an input to a transmitter?

3. 
Which of the following is the reason for signal distortion?

4. 
What is the function of the receiver?

5. 
What is the electrical analogue of the information produced by the source?

6. 
What is defined as the largest distance between the source and the destination upto which a signal can be received with sufficient strength?

7. 
Identify the device which is a combination of a transmitter, an amplifier and a receiver which picks up a signal and retransmits it.

8. 
What refers to the band of frequencies of the original signal?

9. 
‘X’ refers to the frequency range over which equipment operates or the range over which the frequencies in a signal vary. Identify ‘X’.

10. 
What is the loss of strength of a signal during its propagation called?

11. 
What is meant by the term communication?

12. 
Name the device which converts energy from one form to another.

13. 
Name the process of recovering the original information signal from the modulated wave at the receiver end.

14. 
Which among the following can be detected by an envelope detector?

15. 
Which of the following is true about carrier signal?

16. 
Identify the one that is not required in the process of production of amplitude modulated wave?

17. 
Which of the following is false?

18. 
Why audio signals cannot be transmitted directly?

19. 
An oscillator is producing FM waves of frequency 5 kHz with a variation of 15 kHz. What is the modulation index?

20. 
What is the maximum distance up to which a TV transmission can be received if the TV tower has a height of 50 m?

Thank You

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