15 A point source S is placed at the bottom of a transparent

Last updated: 6/13/2023

15 A point source S is placed at the bottom of a transparent block of height 10 mm and refractive index 2 72 It is immersed in a lower refractive index liquid as shown in the figure It is found that the light emerging 1 S Liquid Block from the block to the liquid forms a circular bright spot of diameter 11 54 mm on the top of the block The refractive index of the liquid is a 1 21 b 1 30 c 1 36 d 1 42 JEE Adv 2014