If a lens and a spherical mirror both have a focal of -15 cm, then it may be concluded that
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
4 views
1 Answers
Correct answer is (a) Both are concave
Focal length is negative for concave mirror and concave lens as well.
4 views
Answered