When light enters from a rare to a denser medium, it bends towards the normal line; this is called:
Q1. When light enters from a rare to a denser medium, it bends towards the normal line; this is called:
Answer: Refraction of light
Explanation: When light travels from a rarer (less dense) medium to a denser medium, it slows down and bends toward the normal — this phenomenon is called refraction of light.