UPSC CSE Prelims 2011 Q27 — Geography PYQ

2011Q27·Geography·Atmosphere & Climatology

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?

UPSC CSE Prelims 2011 Q27 — Geography PYQ with Answer

UPSC CSE Prelims 2011 Q27 — Geography PYQ with Answer