Figure shows a mixture of blue, green and red coloured rays incident normally on a right angled prism. The critical angles of the material of the prism for red, green and blue are 46^ , 44^ and 43^ , respectively. The arrangement will separ

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Figure shows a mixture of blue, green and red coloured rays incident normally on a right angled prism. The critical angles of the material of the prism for red, green and blue are 46^ , 44^ and 43^ , respectively. The arrangement will separate

Quantrex Academy · Accepted Answer

Correct answer: A. red colour from blue and green

The given situation is shown below Since, critical angles for blue colour and green colour are less than angle of incidence, hence total internal reflection occurs for blue and green colours of light. Again, since critical angle for red colour is greater than angle of incidence hence red colour transmitted outside from surface B C .

Figure shows a mixture of blue, green and red coloured rays incident normally on a right angled prism. The critical angles of the material of the prism for red, green and blue are 46^ , 44^ and 43^ , respectively. The arrangement will separate

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