light rays of blue ,green and red wavelengths are incident on an isosceles right angled prism.explain with reason which ray will be transmitted through the face AC(hypotenuse).the refractive index of the prism for red ,green and blue light are 1.39,1.424,1.476 respectively

Asked by vishnuraj | 18th May, 2012, 07:17: AM

Expert Answer:

Angle of incidence is 450. Critical angles corresponding to these 3 values of refractive index is  sin 1/sin90=1/ 1.39 angle for 1.39 is 46 deg angle for 1.476 is 42 deg. As angle of incidence is greater than critical angle, the light will emerge through AC. This is true for red.

Answered by  | 18th May, 2012, 01:12: PM

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