Three rays of light, red (R), green (G) and blue (B) are incident on the face PQ of a right angled prism PQR as shown in the figure. The refractive indices of material of the prism for red, green and blue wavelength are 1.27, 1.42 and 1.49 respectively. The colour of ray(s) emerging out of the face PR is
Note: If we assume θ = 45° ⇒ μ < 1.414, then red colour light ray will come out from face PR of prism.
<p>θ? > I = θ ⇒ sinθ? > sinθ ⇒ 1/μ > sinθ</p><p>⇒ μ < 1/sinθ</p><p>Note: If we assume θ = 45° ⇒ μ < 1.414, then red colour light ray will come out from face PR of prism.</p>
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