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Question:

A student is observing the diagram showing the path of a ray of light passing through a glass prism. He would find that for all angles of incidence the ray of light bends:

Towards the normal while entering into the prism and away from the normal while emerging out of the prism,

Away from the normal while entering as well as while emerging out of the prism,

Towards the normal while entering as well as while emerging out of the prism.

Away from the normal while entering into the prism and towards the normal while emerging out of the prism,

Solution:

When light ray enters into prism , it goes from a rarer medium (air) to a denser medium (prism) therefore it bends toward the normal and when light ray goes out from prism , it goes from a denser (prism) medium to a rarer (air) medium therefore it bends away from the normal .