Multiple choice

Dry sand appears bright while wet sand appears dark because of

  1. reflection

  2. refraction

  3. optical illusion

  4. diffraction

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

When light hits dry sand, it gets scattered in many directions due to air trapped between grains, making it appear bright. Wet sand appears darker because water fills the gaps, reducing scattering and causing more light to be absorbed rather than reflected back to the observer.