Saved Bookmarks
| 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. |
|