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Question

A pencil partly immersed in a glass tumbler filled with water appears to be displaced at the interface of air and water because:


A

Glass tumbler creates an illusion and pencil appears displaced

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B

Light does not travel in the same direction in all media

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C

Pencil and water react and the light direction changes

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D

None of these

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Solution

The correct option is B

Light does not travel in the same direction in all media


Light rays while entering a media change their direction depending upon the density of the medium. As water is a denser medium with respect to air, light rays bend towards the normal. When this bent light reaches the eye, the pencil appears to be displaced or distorted.


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