Question

The reflector in a torch light is of cocave shape and the bulb is placed as it focus . What is its benefits ? Please answer fast its urgent .

Answer 1

Answer:

A concave mirror is used in torch lights because the light ray from the source is placed on the focus of a concave mirror. Concave mirror is reflected in such a way that the reflected ray are straight and parallel.

Answer 2

Answer:

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.

Explanation:

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