KcetRay OpticsKCET 2018MCQ+1 / -02018A candle placed 25 cm from a lens forms an image on a screen placed 75 cm on the other side of the lens. The focal length and type of the lens should beA+18.75 cm and convex lensB-18.75 cm and concave lensC+20.25 cm and convex lensD-20.25 cm and convex lensCheck AnswerClear SelectionReveal AnswerShow Explanation