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A concave mirror of radius of curvature ...

A concave mirror of radius of curvature one meter is placed at the bottom of a tank of water. The mirror forms an image of the sun when it is directly overhead. Calculate the distance of the images from the mirror for (a) `80cm` and (b) `40cm` of water in the tank ( `mu=4//3` for water)

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The correct Answer is:
`22.5cm` below water
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