Question

In a concave reflector of tourch, the bulb is placed​

Answer 1

When a light bulb is placed at the focus of a concave mirror reflector, the diverging light rays of the bulb are collected by the reflector and then reflected, to produce a strong, parallel-sided beam of light.

thanks

$\boxed{\sf \green{★ \: mark\:as\: brainliest\:}}$