Attempt this previous-year question. The correct option stays hidden until you choose.
A layer in the Earth’s atmosphere called Ionosphere facilitates radio communication. Why?
1. The presence of ozone causes the reflection of radio waves to Earth.
2. Radio waves have a very long wavelength.
Which of the statements given above is/are correct?
Pick an option to check yourself.
• Correct Answer: D
• Ionosphere reflects radio waves due to free electrons and ions from solar radiation, not ozone.
• Reflection depends on frequency and electron density, not merely wavelength; both statements are incorrect.
Attempt Prelims MCQs or open Mains questions by paper — then continue the same bank inside the app with visual decks.
GyanGram