Question

A lens placed between a candle and a screen forms a real triply magnified image of the candle on the screen. When the lens is moved away from the candle by 0.8 m without changing the positions of candle and screen, a real image one-third the size of the candle is formed on the screen. Determine the focal length of the lens (in cm).​

Answer 1

Answer:

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Explanation:

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