1.To focus sunlight for heating purpose
2.To have close look during shaving.
3.To produce parallel beam in car headlights.
4. Dentist end ENT doctors use it.
5. It is used in torches.
More uses of Concave mirrors:
~Used as Shaving Mirrors
~They're used at carnival fun-houses, where you look in different mirrors and see yourself as really big or really small.