Find the focal length of the lens he will need

Reference no: EM13684983

1. A technician wishes to produce an image on a wall using a thin lens. The lens to wall distance is to be 6 meter. He also wants the image to be the same size as the object. Find the focal length of the lens he will need?

2. When do a concave spherical mirror of radius R and a focal length f produce a real image with a size greater than the object which is at distance p?

Reference no: EM13684983

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