JEE Main202224 Jun 2022Evening ShiftPhysicsRay OpticsActual
A ray of light is incident at an angle of incidence 60 ° on the glass slab of refractive index 3 . After refraction, the light ray emerges out from other parallel faces and lateral shift between incident ray and emergent ray is 4 3 cm . The thickness of the glass slab is _____ cm .
Correct answer
0
Step-by-step solution
From snell's law, sin i sin r = 3 ⇒ sin 60 ° sin r = 3 ⇒ r = 30 ° From the diagram shown, d = t sin i - r cos r ⇒ t × 1 2 3 2 = 4 3 ⇒ t = 12   cm