EASY
12th ICSE
IMPORTANT
Earn 100

Name the waves used in radar. Give order of their wavelength. Explain, why these particular waves are used in radar?

Important Questions on Communication Systems

EASY
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 22 - Communication Systems>QUESTIONS>Q 30
How does radar help in determining the distance of a distant object?
MEDIUM
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 22 - Communication Systems>QUESTIONS>Q 31
Draw a schematic diagram showing the (i) ground wave (ii) sky wave and (iii) space wave propagation modes for electromagnetic waves. Write the frequency range for the standard AM broadcast.
MEDIUM
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 22 - Communication Systems>QUESTIONS>Q 31
Draw a schematic diagram showing the (i) ground wave (ii) sky wave and (iii) space wave propagation modes for electromagnetic waves. Write the frequency range for each of the following: (i) Standard AM broadcast (ii) Television (iii) Satellite communication.
EASY
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 22 - Communication Systems>QUESTIONS>Q 32

In the given block diagram of a receiver, identify the boxes labelled as X and Y and write their functions.

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MEDIUM
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 22 - Communication Systems>QUESTIONS>Q 33
Why a GPS receiver collects data from minimum 4 satellites?
EASY
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 22 - Communication Systems>QUESTIONS>Q 1
What is modulation? Explain the need of modulating a low frequency information signal.
MEDIUM
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 22 - Communication Systems>QUESTIONS>Q 2
What is amplitude modulation? Write the importance of modulation factor.
MEDIUM
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 22 - Communication Systems>QUESTIONS>Q 3
Draw a block diagram of simple amplitude modulation. Explain briefly how amplitude modulation is achieved?