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In the diagram below, PQ is a ray of lig...

In the diagram below, PQ is a ray of light incident on a rectangular glass block.

How are the angles i and 'e' related to each other?

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When the incident ray is undergoing minimum deviation, the angle of incidence is equal to angle of emergence, i.e.,
`anglei=anglee`
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In the diagram below, PQ is a ray of light incident on a rectangular glass block. Copy the diagram and complete the path of the ray of light through the glass block. In your diagram, mark the angle of incidence by letter 'i' and the angle of emergence by the letter 'e'.

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A monochromatic point source of light O is seen through a rectangular glass block ABCD. Paths of two rays, in and outside the block, are shown in the figure below. Justify your answer with the help of an appropriate ray diagram as shown in figure.

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ICSE-SAMPLE PAPER 2011-SECTION-II
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