The concave mirror converges the light from the Sun at a specific point, forming a sharp, bright spot on the paper. This spot represents the image of the Sun and serves as the focus of the mirror.
What is the role of the concave mirror in focusing sunlight on the paper, and what is the significance of the bright spot on the paper?
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The concave mirror plays a crucial role in focusing sunlight onto the paper by converging parallel rays to a single point, known as the focal point. The mirror’s curvature allows it to concentrate solar energy onto a small area. The significance of the bright spot on the paper lies in its concentration of intense heat. The bright spot corresponds to the focal point where the sunlight is most concentrated. The elevated temperature at this point can exceed the paper’s ignition temperature, leading to combustion. This phenomenon is exploited in solar devices for harnessing concentrated solar energy for various applications.