Question

in ntse explain about refraction of light chapter introduction

Answer 1

when a ray of light from one medium to another, it undergoes a change in its direction,.when a ray of light goes from an optically less dense medium to a more dense medium it bends towards the normal. on the other hand, a ray of light going from an optically more dense medium to a less dense medium, will bend away the normal

Answer 2

when a ray of light from one medium to another, it undergoes a change in its direction,.when a ray of light goes from an optically less dense medium to a more dense medium it bends towards the normal.