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11th Maharashtra Board
IMPORTANT
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The waves used by artificial satellites for communication purposes are

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Important Questions on Electromagnetic Waves and Communication System

EASY
11th Maharashtra Board
IMPORTANT
Physics>Chapter 13 - Electromagnetic Waves and Communication System>Exercises>Q 1

If a TV telecast is to cover a radius of 640 km, what should be the height of transmitting antenna?

EASY
11th Maharashtra Board
IMPORTANT
Physics>Chapter 13 - Electromagnetic Waves and Communication System>Exercises>Q 2
State two characteristics of an EM wave.
EASY
11th Maharashtra Board
IMPORTANT
Physics>Chapter 13 - Electromagnetic Waves and Communication System>Exercises>Q 2
Why are microwaves used in radar?
EASY
11th Maharashtra Board
IMPORTANT
Physics>Chapter 13 - Electromagnetic Waves and Communication System>Exercises>Q 2
What are EM waves ?
MEDIUM
11th Maharashtra Board
IMPORTANT
Physics>Chapter 13 - Electromagnetic Waves and Communication System>Exercises>Q 2
How are EM waves produced?
EASY
11th Maharashtra Board
IMPORTANT
Physics>Chapter 13 - Electromagnetic Waves and Communication System>Exercises>Q 2

Can we produce a pure electric or magnetic wave in space? Why?

EASY
11th Maharashtra Board
IMPORTANT
Physics>Chapter 13 - Electromagnetic Waves and Communication System>Exercises>Q 2
Does an ordinary electric lamp emit EM waves?
EASY
11th Maharashtra Board
IMPORTANT
Physics>Chapter 13 - Electromagnetic Waves and Communication System>Exercises>Q 2
Why light waves travel in vacuum whereas sound wave cannot?