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Name the type of mirrors used in the design of solar furnaces. Explain how temperature is achieved by this device.
Concave mirrors are used in the design of ‘solar furnaces’.
The concave mirrors are converging mirrors. They focus the parallel sun rays at a single point called the focus.
The solar furnace is placed at the focus of the large concave mirror called a reflector. The concave reflector focuses the Sun’s rays on the furnace and the high temperature is achieved.
The solar furnace principle is being used to make solar cookers.
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