Describe the positions of the source of light with respect to a concave mirror in torch light, projector lamp, flood light.
person
brightness_auto
1 Answer
Torch light:
In torch light concave mirror is used and the source of light is placed at the focus of the concave mirror so that after reflection we can get the parallel beam of light. The parallel beam produced helps in seeing the objects which are more distant apart also and it is having high intense beam also.
Projector lamp:
In projector lamp concave mirror is used and the source of light is placed at the centre of curvature of the concave mirror so that we can see the image produced on the projector clearly.
Floodlight:
In floodlight also concave mirror is used and the source of light is placed beyond the centre of curvature of concave mirror so that we get the bright and intense beam of ligh.