The reflector on top of solar cooker is used to:

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Diverge solar energy

Focus the solar energy

Focus light energy

Reflect energy to surroundings

answer is C.

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Detailed Solution

Concept- A solar cooker is a device that pasteurized beverages and other food items using the energy of direct sunshine. Solar cookers aid in lowering fuel expenses and air pollution because they don’t require any fuel and are completely free to use.
Complete solution, step by step:
A solar cooker works by concentrating sunlight, converting light energy to heat energy, and then storing that heat energy.
The solar cooker's reflector, which has a mirror surface with a high specular reflection,
It is utilized to focus sunlight onto the tiny cooking space. When light is reflected secularly, it signifies that there is just one outgoing direction for the light that was incident. Convex mirror with a focal length equal to the separation between it and the inside of the cooker is what is utilized as the reflector. We are aware that the sun and its light rays can be thought of as being at an endless distance from us. When light beams from infinity strike a convex mirror, they converge at the mirror's focal length. These narrowly focused and concentrated light beams aid in increasing the cooker's temperature so that food may be cooked.
Hence, the correct option is 3.

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