why is a concave mirror used in torch
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A concave mirror is used in torch lights , because the light ray from the source placed on the focus of a concave mirror are reflected in such a way that the reflected ray are strong, straight,and parallel.
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- As we know that the curve mirror contains a reflecting surface i.e. concave or convex.
- The concave mirror converges light, it can reflect parallel rays through focus, it is also known as a converging mirror.
- When light is placed on the concave mirror focus, the mirror reflects parallel, straight and strong rays. due to this concave mirror used in the torch.
- The parallel light can be travel a greater distance.
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