Question Answers

Sahay Sir > Question Answers > JEE Mains Physics 2002-2019 Solved Video Solutions > Chapter 16 - Optics > A beaker contains water up to a height h1 and kerosene of height h2 above water so that the total height of (water + kerosene) is (h1+h2) . Refractive index of water is μ1 and that of kerosene is μ2 . The apparent shift in the position of the bottom of the beaker when viewed from above is

A beaker contains water up to a height h1 and kerosene of height h2 above water so that the total height of (water + kerosene) is (h1+h2) . Refractive index of water is μ1 and that of kerosene is μ2 . The apparent shift in the position of the bottom of the beaker when viewed from above is

In figure the number of reflections it makes before emerging form the other end is close to : (refractive index of fiber is 1.31 and sin40^∘=0.64) the optical fiber is l = 2 m long and has a diameter of d=20μm. If a ray of light is incident on one end of the fiber at angle θ1=40^∘