JEE Main 2022 · 29 Jul · Shift 2 · Physics Q50

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PhysicsSingle correct+4 / -1Question 50 of 90

Light enters from air into a given medium at an angle of 45° with interface of the air-medium surface. After refraction, the light ray is deviated through an angle of 15° from its original direction. The refractive index of the medium is :

1.732

1.333

1.414

2.732

Answer and worked solution

Official answer: C

Angles. 45° with the surface is 45° incidence; a 15° deviation leaves $r=30°$ . $n=\dfrac{\sin45°}{\sin30°}=\sqrt2\approx1.414$ .

(C)

Topics:Refraction at plane surfaces

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JEE Main 2022 · 29 Jul · Shift 2, Physics question 50