12 What should be the value of refractive index n of a glass

Last updated: 5/30/2023

12 What should be the value of refractive index n of a glass rod placed in air so that the light entering through the flat surface of the rod does not cross the curved surface of the rod irrespective of the angle of incidence i 1 n 2 3 n 2 air glass 2 n n 4