Multiple choice

Which of the following mirror is used in solar furnace?

  1. Concave mirror

  2. Convex mirror

  3. Plane mirror

  4. Parabolic mirror

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

While concave mirrors are often used, a parabolic mirror is the most efficient shape for a solar furnace because it focuses all incoming parallel sunlight to a single point, maximizing heat concentration.