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प्रश्न
Name some of the solar energy devices.
उत्तर
Solar cookers, solar water heaters and solar cells are solar energy devices.
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संबंधित प्रश्न
What kind of mirror – concave, convex or plain – would be best suited for use in a solar cooker? Why?
Why is the copper tube of a solar water heater painted black from outside?
What type of reflector is used in a box-type solar cooker?
Name the device which converts sunlight into electricity.
Name that part of a box-type solar cooler which allow the sun's heat rays to enter the box but does not allow inside heat to go out.
Name the semi-conductor material which is usually used for making solar cells.
Write the uses of solar cells.
What is a solar cell panel? For what purpose is it used? State its two main advantages.
The value of solar constant is:
(a) 1.4 kWh
(b) 1.4 kW/m
(c) 1.4 kW/m2
(d) 1.4 kW/m3
Two statements are given - one labelled Assertion (A) and the other labelled Reason (R).
Assertion (A): A solar cooker cooks the meal due to the greenhouse effect.
Reason (R): The plane mirror is responsible for producing the greenhouse effect.
