Physics: Principles with Applications
Physics: Principles with Applications
6th Edition
ISBN: 9780130606204
Author: Douglas C. Giancoli
Publisher: Prentice Hall
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Chapter 22, Problem 13Q
To determine

When a lost person signals by switching a flashlight on and off using Morse code, then what type of modulation does it uses.

Expert Solution & Answer
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Answer to Problem 13Q

Solution:

The amplitude modulation is using.

Explanation of Solution

It is amplitude modulation. We create a signal or modulate the signal by changing the signal strength. However, in FM we change the frequency of the signal. Frequency of light determines its color. When we switch the light on and off, we change its amplitude from zero to maximum. Frequency of carrier wave is frequency of light.

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