Geometrical OpticsHard
Question
A beam of light costing of red green and is incident on a right angled prism. The refractive index of the material of the prism for the above red, green and blue wavelengths are 1.39, 1.44 and 1.47 respectively The prism will -
Options
A.separate part of the red color from the green and blue colors
B.separate part of the blue color from the red and green colurs
C.separate all the three colors from the other two colors
D.not separate even partially, any colors from the other colors
Solution
μred sin i = 1 sin r
1.39 ×
= sin rsin r < 1 ⇒ possible (refraction is possible)
μgreen × sin i 1.44 ×
> 1 ⇒ not possible Same for blue 1.47 ×
> 1 ⇒ It also not possible.
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