Question

14) a) when light from free space bends towards normal,
On hitting a surface, then what should be its
& refractive index​

Answer 1

Answer:

When light going from rarer medium to a denser medium. it bends towards normal, and in going from a denser to a rarer medium, it bends away from the normal.Hence, when light from free space bends towards normal, on hitting surface, refractive index of denser medium is always greater than refractive index of rarer medium.Therefore, u>1.