Question

Q. Which of the following statements about the Ionosphere is/are incorrect?

• A. Located between 80 and 400 km above the mesopause.
• B. It contains electrically charged particles known as ions.
• C. Radio waves transmitted from the earth are reflected back to the earth by this layer.
• D. In this layer charged particles are affected only by the magnetic fields of the Earth.

Answer 1

The correct option is D In this layer charged particles are affected only by the magnetic fields of the Earth.

Explanation:

Option (a), (b) and (c) are correct: Ionosphere is located between 80 and 400 km above the mesopause. It contains electrically charged particles known as ions. Ionosphere is helpful in radio communication as Radio waves transmitted from the earth are reflected back to the earth by this layer.

Option (d) is incorrect: In the Ionosphere charged particles are affected by the magnetic field of the earth and Sun.