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

Options

A. Green colour from red and blue
B. All the three colours
C. Red colour from blue and green
D. Blue colour from red and green

Answer

C

Explanation

Angle of incidence i = `45^(@)`
For blue and green
`i_(c ) gt i`
For Red `i_(c ) lt i`.