A Level Courses

Chapter 7: IGCSE A Level Physics Exam Tests

IGCSE A Level Physics MCQs - Chapter 7

# Communication Systems Multiple Choice Questions (MCQs) PDF Download - 1

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## Communication Systems Questions and Answers : MCQ Quiz 1

MCQ 1:

As compared to sound waves the frequency of radio waves is

1. lower
2. higher
3. equal
4. may be higher or lower
MCQ 2:

Decrease in strength of signal is known as

1. tuning
2. modulation
3. attenuation
4. amplification
MCQ 3:

If frequency of modulated wave is less than frequency of carrier wave, then input signal is

1. negative
2. positive
3. zero
4. infinite
MCQ 4:

At the end of communication system, the signal is converted from radio to

1. sound
2. mechanical energy
3. kinetic energy
4. potential energy
MCQ 5:

Energy is lost in wires due to

1. heating
2. resistance
3. conduction
4. both A and B

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