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An object is placed at a distance of 20 cm in front of a concave lens of focal length 20 cm. Find : (a) the position of image, and (b) the magnification of image. |
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Answer» An object is placed at a distance of 20 cm in front of a concave lens of focal length 20 cm. Find : (a) the position of image, and (b) the magnification of image. |
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