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The ionosphere consists of __________ layer.

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The ionosphere consists of __________ layer.

(a) negative charge

(b) positive charge

(c) no charge

(d) neutral

I have been asked this question by my school teacher while I was bunking the class.

Question is from Threshold Effect in FM in chapter Noise of Analog Communications

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The correct answer is (a) negative charge

For explanation: The ionosphere is the ionized part of Earth’s upper atmosphere. It consists of a negative layer.

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