Question : The layer of the atmosphere in which Radio Waves are reflacted back is called :
Option 1: ionosphere
Option 2: troposphere
Option 3: stratosphere
Option 4: exosphere
Correct Answer: ionosphere
Solution : The correct answer is ionosphere.
Ionosphere is responsible for reflection of radio waves back to earth. This layer makes the communication and navigation possible on earth. It extends fro 60 km to 800 km from the earth's crust. It also acts as the boundary between the earth's lower atmosphere and outer exosphere i.e. vacuum. It is also known as Thermosphere because high temperature is observed here because of solar activity.
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