1.

If a lens and a spherical mirror both have a focal of -15 cm, then it may be concluded that :(a) Both are concave(b) The lens is concave and the mirror is convex(c) The lens is convex and the mirror is concave(d) Both are convex

Answer»

Correct answer is (a) Both are concave

Focal length is negative for concave mirror and concave lens as well.



Discussion

No Comment Found

Related InterviewSolutions