Question: Q. 5. The radius of curvature of the curved surface of a planoconvex lens is
(a) act as a convex lens only for the objects that lie on its curved side.
(b) act as a concave lens for the objects that lie on its curved side.
(c) act as a convex lens irrespective of the side on which the object lies.
(d) act as a concave lens irrespective of side on which the object lies. [NCERT Exemplar]
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Solution:
Ans. Correct option : (c)
Explanation: As we know the relations between
Given that,
Put the values;
As
So, lens act as a convex lens irrespective of the side on which the object lies.
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