The bending of light as it passes from one medium to another.

The change in the direction of waves, including sound waves, as they pass through different mediums.

तरंगों का दिशा परिवर्तन

English Usage: Refraction also occurs with sound waves when they travel through air and water.

Hindi Usage: जब ध्वनि तरंगें हवा और पानी के माध्यम से यात्रा करती हैं तो अपवर्तन भी होता है।