a 50 cm height of tall object is at a very large distance from a diverging lens virtual errect and dimnished image of the object is form at distance 20 cm in front of the lens find focal length of the lens
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When an object is placed at a very large distance from a diverging lens, then image is formed at the focus of the lens.
Therefore, the focal length of the lens is 20 cm.
Explanation:
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