Multiple choice

The sun remains visible for some time after it actually sets below the horizon. This happens due to

  1. Atmospheric refraction

  2. Scattering of light

  3. Dispersion

  4. Persistence of vision

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

As sunlight enters the atmosphere, it bends due to the change in density of the air layers. This refraction allows us to see the sun even after it has physically dipped below the horizon.