The bright outer layer of the sun is known as:

This question was previously asked in
UKPSC Combined Upper PCS (Prelims) Exam (General Studies) Official Paper-I (Held On: 14 Jul, 2024)
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  1. Photosphere
  2. Ionosphere
  3. Mesosphere
  4. Sunspots

Answer (Detailed Solution Below)

Option 1 : Photosphere
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The correct answer is option 1.

Key Points

  • The photosphere is the visible surface layer of the Sun that emits the light we see. Hence, option 1 is correct.
  • It is often referred to as the Sun’s “bright outer layer” and has a temperature of about 5,500°C.
  • Sunspots are cooler, darker areas on the photosphere.
  • The ionosphere and mesosphere are layers of Earth’s atmosphere, not related to the Sun.
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