Multiple choice

Which of the following mirror has a virtual principal focus?

  1. Concave mirror

  2. Convex mirror

  3. Plane mirror

  4. None of these

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

A convex mirror causes light rays to diverge, and the focus is found by extending the reflected rays backward to a point behind the mirror. This point is a virtual principal focus.