A pencil when dipped in water in a glass tumbler appears to be bent at the interface of air and water. Will the pencil appear to be bent to the same extent, if instead of water we use liquids like, kerosene or turpentine? Support your answer with reason.

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Solution

The extend of bending in a medium depends on the refractive index of the medium. Since each liquid has a different refractive index, the extent of bending is different in different mediums. So, the pencil will appear to be bent to a different extent, if instead of water we use liquids like, kerosene or turpentine.

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