A) it is not possible to obtain the image produced by a convex mirror on the screen
B) a convex lens has high resolving power so it helps to measure the focal length correctly
C) a convex mirror always forms a real image which is diminished by the convex lens
D) none of these
Correct Answer: A
Solution :
A convex mirror always forms a virtual image which can?t be cast on a screen. Hence a convex lens is used to find focal length of a convex mirror.
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