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Question
A given ray of light suffers minimum deviation in an equilateral prism P . Additional prism Q and R of identical shape and of the same material as P are now added as shown in fig . The rays will now
A given ray of light suffers minimum deviation in an equilateral prism P . Additional prism Q and R of identical shape and of the same material as P are now added as shown in fig . The rays will now
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Solution
The correct option is C Same deviation as before
- The incident ray passing through such an arrangement would have no net deviation change.
- It is due to the fact that after suffering from minimum deviation, the ray becomes parallel to the base of the prism. As mentioned, prism Q and R have identical shapes and the same material. Therefore, the refracted ray continues to move parallel to the base of the prism.
Hence, (C) the same deviation occurs.
Same deviation as before
- The incident ray passing through such an arrangement would have no net deviation change.
- It is due to the fact that after suffering from minimum deviation, the ray becomes parallel to the base of the prism. As mentioned, prism Q and R have identical shapes and the same material. Therefore, the refracted ray continues to move parallel to the base of the prism.
Hence, (C) the same deviation occurs.
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