Explain with the help of a labeled ray diagram, why a pencil partly immersed in water appears to be bent at the water surface. State whether the bending of pencil will increase or decrease if water is replaced by another liquid which is optically more dense than water. Give reason for your answer.
the labeled ray diagram of a pencil partly immersed in water appears to be bent at the water surface.
The bending of pencil will increase decrease if water is replaced by another liquid which is optically more dense than water. The optically denser medium will cause more refraction (or more bending) of light rays
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