Directions : Each of these questions contains two statements, Assertion and Reason. Each of these questions also has four alternative choices, only one of which is the correct answer. You have to select one of the codes (a), (b), (c) and (d) given below.
(a) Assertion is correct, reason is correct; reason is a correct explanation for assertion.
(b) Assertion is correct, reason is correct; reason is not a correct explanation for assertion
(c) Assertion is correct, reason is incorrect
(d) Assertion is incorrect, reason is correct.
Assertion : A lens, whose radii of curvature are different, is forming the image of an object placed on its axis. If the lens is reversed, the position of the image will not change.
Reason : The focal length of a lens is given by 1/f =μ (1/R1 -1/R2) and so focal length in both the cases is same
