give reason➡️why concave mirrors are used in solar devices
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The Sun is a distant object, so the rays coming from it are parallel to the principal axis and are incident on a concave mirror. Then after reflection, they converge to a single point. So, the heat is concentrated at that point which gives better results. Hence, concave mirrors are used in solar devices.
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Concave mirrors are used in solar devices to collect heat and radiations. Heat radiations from the sun coming from infinity are brought to focus by concave mirror in its focal plane.
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