A person can see clearly objects only whenthey lie between 50cm and 400cm from his eyes. In order to increase the maximum distance of distinct vision of infinity, the type and power of the correcting lens, the person has to use, will be

A person can see clearly objects only whenthey lie between 50cm and 40

1.	A person can see clearly objects only whenthey lie between 50cm and 400cm from his eyes. In order to increase the maximum distance of distinct vision of infinity, the type and power of the correcting lens, the person has to use, will be
Answer» CONVEX,+2.25 diopter concave, `-0.25` diopter Concave,`-0.2` diopter convex,`+0.15` diopter Answer :B