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When an object is placed 6cm from a certain converging lens, it forms a real image. When the object is moved to 4cm from the lens, the image moves 1cm farther from the lens. Find the focal length of this lens. |
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Answer» Step-by-step EXPLANATION: aaaaAaaaaaaaaaaaaahahhahvachaiaaafdddaccagiskvsuz8sivscyaiajcayuabcsy |
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