JEE Mains · Physics · STD 12 - 9. Ray optics and optical instruments
A light ray enters a solid glass sphere of refractive index \(\mu=\sqrt{3}\) at an angle of incidence \(60^{\circ}\). The ray is both reflected and refracted at the farther surface of the sphere. The angle (in degrees) between the reflected and refracted rays at this surface is......
- A \(85\)
- B \(90\)
- C \(80\)
- D \(75\)
Answer & Solution
Correct Answer
(B) \(90\)
Step-by-step Solution
Detailed explanation
By Snell's law at \(A\) \(1 \times \sin 60^{\circ}=\sqrt{3} \times \sin \theta\) \(\frac{\sqrt{3}}{2}=\sqrt{3} \sin \theta\) \(\sin \theta=\frac{1}{2} \Rightarrow \theta=30^{\circ}\) So at \(B:\) \(\theta+60^{\circ}+\alpha=180^{\circ}\)…
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