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The main objective of an optical source ...

The main objective of an optical source is

A

to convert electrical energy into an optical energy

B

to detect the signal

C

to demodulate the electrical signal

D

all of the above

Text Solution

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The correct Answer is:
A
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AAKASH SERIES-COMMUNICATION SYSTEM -LECTURE SHEET (LEVEL - I) (MAIN) (EXERCISE - IV) (Straight Objective & More than one Correct Answer Type Questions)
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  3. Speed of electromagnetic waves is the same

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  6. The space wave propagation is utilized in

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  10. A 100m long antenna is mounted on a 500m tall building. The complex ca...

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  12. The number of telephone conversations by a fibre of band width 40MHz, ...

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  13. Which of the following devices is full duplex?

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  14. Which of the following devices is half duplex ?

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  15. Which of the following statement is wrong?

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  16. Through which mode of propagation the radio waves can be sent from one...

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  17. The maximum peak to peak voltage of an AM wire is 24 mV and the minimu...

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  18. In a communication system, noise is most likely to affect the signal

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  19. The radio waves of frequency 300 MHz to 3000 MHz belong to

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  20. Match the column I with column II.

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