Question

Describe the positions of the source of light with respect ti a concave mirror in 1 torch light 2 projector lamp 3 flood light

Answer 1

Explanation:

In torches, the source of light is placed at the focus of the concave mirror to obtain a parallel beam of light. In projector lamps, the source of light is placed at the centre of curvature of the concave mirror. In floodlights, the source of light is placed just beyond the centre of curvature of the concave mirror.