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SSC CGL 2022 PYQ — Question 43

SSC CGL - 02 Dec 2022 - Shift 3 • General Awareness • Q43

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Which layer of atmosphere helps in radio transmission?

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Correct answer: B

Explanation

The correct answer is Option 2. i.e. Thermosphere.

  • The thermosphere lies between the exosphere and the mesosphere. “Thermo” means heat, and the temperature in this layer can reach up to 4,500 degrees Fahrenheit. 
  •  It contains electrically charged particles known as ions.It is therefore known as Ionosphere. The temperature here starts increasing with heights. Radio waves transmitted from the earth are reflected back to the earth by this layer.