A converging beam of rays is incident on a diverging lens
PHYSICS · Subjective · CBSE · Physics · Ray Optics and Optical Instruments · Ray Optics and Optical Instruments
Problem
A converging beam of rays is incident on a diverging lens. After passing through the lens, the rays intersect at a point 15cm from the lens. If the lens is removed, the point where the rays meet moves 5cm closer to the lens mount. Find the focal length of the lens.