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A convex lens of focal length 15 cm produces a magnification of + 4. The object is placed : (a) at a distance of 15 cm (b) between 15 cm and 30 cm (c) at less than 15 cm (d) beyond 30 cm |
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Answer» A convex lens of focal length 15 cm produces a magnification of + 4. The object is placed : (a) at a distance of 15 cm (b) between 15 cm and 30 cm (c) at less than 15 cm (d) beyond 30 cm |
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