Question

Ionosphere is present between :

• A. Stratosphere and mesosphere
• B. Mesosphere and thermosphere
• C. Troposphere and stratosphere
• D. Troposphere and Thermosphere

Answer 1

The correct option is B Mesosphere and thermosphere

The ionosphere is defined as the layer of the Earth's atmosphere that is ionized by solar and cosmic radiation. It lies 75 to 1000 km above the Earth. It is distinguished because it is ionized by solar radiation. ThIs layer is present between the mesosphere and the thermosphere. It influences radio propagation to distant places on the Earth.

Thus the correct answer is option B.