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A student obtained a sharp image of a lighted candle on a screen using convex lens. Now he wants to focus a distant lamp on a far away electric pole in which direction should the lens be moved for this purpose with respect to the screen , to get a sharp image on the screen. Justify your answer |
| Answer» A student obtained a sharp image of a lighted candle on a screen using convex lens. Now he wants to focus a distant lamp on a far away electric pole in which direction should the lens be moved for this purpose with respect to the screen , to get a sharp image on the screen. Justify your answer | |