Home PYQs UPPSC UPPSC MCQs Prelims 1998 (GS Paper I)

Question

Wireless communication is reflected back to the earth's surface by the:

  1. Troposphere
  2. Stratosphere
  3. Ionosphere
  4. Exosphere

Answer:

Option C: Ionosphere

Detailed Solution:

The correct answer is “Ionosphere”.

The ionosphere is a layer of the Earth's atmosphere containing free electrons and ions. These charged particles can reflect radio waves back to Earth, making long-distance radio communication possible.