A convex mirror of focal length 10cm is placed in water.If the refractive index
of water is 1.33.What will be the focal length of the convex mirror in water?
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According to the lensmaker's formula, the multiplier is . That is about 4 if the refractive index of glass is 1.5, and that of water 1.33. A point object is placed at a distance of 30cm from a convex mirror of focal length 30cm.
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