What kind of mirror, concave, convex or plane, would be best suitable for use in a solar cooker? why?
Answers
Answer:
Plane mirror is best suited for use in box-type solar cooker as the plane mirror reflects all the sun rays on the top of the solar cooker box in the form of a strong beam of light. The sun's heat rays cook the food present in the cooker. This type of cooker can be used only to cook those food materials which require slow heating. In order to ac higher temperatures required for baking and frying (which require strong heating), spherical - type solar cooker (having a concave mirror) is used. When a concave mirror reflector is attached to a solar cooker, it converges a large amount of sun's heat rays at its focus due to which a higher temperature is produced in the focus area (which is required for baking and frying). Thus, a concave mirror is best suited for use in a solar cooker
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Explanation:
A concave mirror is used in a solar cooker as it uses heat of the sunlight to cook food. The mirror focuses all the incident sunlight at a point. The temperature at that point increases, thereby cooking and heating the food placed at that point.