In torches, search lights and headlights of vehicles the bulb is placed

What type of mirror is used in search lights and head lights of vehicles?

Concave mirror is used in headlights of vehicles, because it

Concave mirrors are used as reflectors in the headlights of vehicles, torch lights. Where is the bulb placed ?

Filament of a torch bulb is

Find the odd man out: Torches, flood lights, head lamps of vehicles, rear view mirror.