Multiple choice general knowledge science & technology

How much time light takes to reach earth from Moon?

  1. 8.1 minutes

  2. 3.2 seconds

  3. 2.3 minutes

  4. 1.28 seconds
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Light takes approximately 1.28 seconds to travel from the Moon to Earth. The average Earth-Moon distance is about 384,400 km, and light travels at about 300,000 km/s. Calculating: 384,400 ÷ 300,000 ≈ 1.28 seconds. The other options are incorrect - 8.1 minutes is the time for light from the Sun, 3.2 seconds is too short, and 2.3 minutes is too long.

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