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Q: How much time is taken by sunlight to reach Earth?
  • A. 7 min 32 sec
  • B. 9 min 32 sec
  • C. 7 min 56 sec
  • D. 8 min 20 sec
Correct Answer: Option D - Sunlight travels at the speed of 3×10⁸m/s. Photons emitted from the surface of the Sun need to travel across the vacuum of space to reach our eyes. It takes sunlight an average 500 seconds, or 8 minutes and 20 seconds to travel from the Sun to the Earth. The distance between the Earth and the Sun is equal to 1.496×10⁸km.
D. Sunlight travels at the speed of 3×10⁸m/s. Photons emitted from the surface of the Sun need to travel across the vacuum of space to reach our eyes. It takes sunlight an average 500 seconds, or 8 minutes and 20 seconds to travel from the Sun to the Earth. The distance between the Earth and the Sun is equal to 1.496×10⁸km.

Explanations:

Sunlight travels at the speed of 3×10⁸m/s. Photons emitted from the surface of the Sun need to travel across the vacuum of space to reach our eyes. It takes sunlight an average 500 seconds, or 8 minutes and 20 seconds to travel from the Sun to the Earth. The distance between the Earth and the Sun is equal to 1.496×10⁸km.