A person is standing at 60 cm away in front of a plane mirror. The mirror is moved towards him. It was found that the final image also moved by 40 cm from its initial position towards the mirror. Find the distance the mirror was moved by.

20 cm

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80 cm

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15 cm

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40 cm

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Solution

The correct option is A 20 cm

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cm in front of a plane mirror. If the mirror is now moved

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cm away from the object, how is the image shifted from its previous position?

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