Physics, 07.04.2021 21:10 kidzay

(a) A slide projector is to project a (40 mm x 20 mm) slide on a 4 m x 4 m screen. Find the focal length of the convex lens used if the screen is 10 m away from the lens. (b) Which of the following mirrors or lenses could produce a virtual image?Explain.
(i) Concave lens
(ii) Convex lens
(iii) Convex mirror

(a) A slide projector is to project a (40 mm x 20 mm) slide on a 4 m x 4 m screen. Find the focal l

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(a) A slide projector is to project a (40 mm x 20 mm) slide on a 4 m x 4 m screen. Find the focal le...