MEDIUM
12th ICSE
IMPORTANT
Earn 100

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.

Important Questions on Communication Systems

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?
MEDIUM
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 22 - Communication Systems>QUESTIONS>Q 4
What is amplitude modulation? Distinguish one difference between frequency modulation and amplitude modulation. 
MEDIUM
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 22 - Communication Systems>QUESTIONS>Q 5
Explain, with the help of a block diagram, how the process of modulation is carried out in radio broadcasts?
MEDIUM
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 22 - Communication Systems>QUESTIONS>Q 6
Distinguish between frequency modulation and amplitude modulation. Why is FM signal less susceptive to noise than an AM signal?