Question

A cheap replica is made of an old camera. If the lens in the old camera was glass, and the lens in the replica is plastic with a smaller index of refraction than the glass, in order to have the same focal length the plastic lens will have to ______.

a. be less strongly curved than the glass lens

b. have the same curvature as the glass lens

c. be more strongly curved than the glass lens

Answer 1

(11) Cékelő same - so, focal les if he becomes length R should should be more less than to have be small that strongly curved is Ans c