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Question

Which of the following layers of atmosphere contains the electrically charged particles and reflects the ratio waves back to the earth's surface to make wireless communication possible?

A
Troposphere
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B
Stratosphere
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C
Ionosphere
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D
Exosphere
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Solution

The correct option is C Ionosphere
The ionosphere is the ionized part of Earth's upper atmosphere, from about 60 km (37 mi) to 1,000 km (620 mi) altitude, a region that includes the thermosphere and parts of the mesosphere and exosphere. The ionosphere is ionized by solar radiation. It contains the ions and due to this it reflects the radio wave.
The correct answer is C.

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