AP EAMCET · PHYSICS · Ray Optics
A light ray incidents on an equilateral prism made of material of refractive index \(\sqrt{3}\). Inside the prism, if the light ray moves parallel to the base of the prism, then the angle of incidence of the light ray is
- A \(30^{\circ}\)
- B \(45^{\circ}\)
- C \(75^{\circ}\)
- D \(60^{\circ}\)
Answer & Solution
Correct Answer
(D) \(60^{\circ}\)
Step-by-step Solution
Detailed explanation
\(A = 60^{\circ}\) \(r_1 = A/2 = 60^{\circ}/2 = 30^{\circ}\) \(\sin i = n \sin r_1 = \sqrt{3} \sin 30^{\circ} = \sqrt{3}(1/2) = \sqrt{3}/2\) \(i = 60^{\circ}\)
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