1.

A spherical mirror and thin spherical lens have each of focal length of +25 cm.The mirror and the lens are likly to be- (a)both concave . (b)both convex. (c)mirror is concave and lens is convex . (d)mirror is convex and lens is concave .

Answer»

(B)both CONVEX as both of them have a POSITIVE FOCAL LENGH




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