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प्रश्न
Solar reflectors are important, why?
What is the importance/ function of a solar reflector?
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उत्तर
The solar panel consists of many reflectors that reflect and concentrate solar radiations on absorbers.
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संबंधित प्रश्न
Name some of the solar energy devices.
How much solar energy will be received by 1 m2 area in one hour if the solar constant be 1.4 kW/m2?
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.
Why is the solar cooker box covered with a glass sheet?
The radiations present in sunlight which make a solar cooker work are:
(a) visible light rays
(b) ultraviolet rays
(c) comic rays
(d) infrared rays
In order to make an efficient solar cooker, the cover of the cooker box should be made of:
If the solar constant is 1.4 kW/m2 then solar energy recived by 1m2area in one hour is:
(a) 5040 J
(b) 504.0 kJ
(c) 5040 kJ
(d) 5.04 kJ
A solar cooker may not cook food if
(a) the solar cooker is not placed in the shade
(b) the glass sheet cover of solar cooker is not closed
(c) a convex mirror reflector is not used
Draw neat and labelled diagram.
One solar panel produces a potential difference of 18 V and current of 3 A. Describe how you can obtain a potential difference of 72 Volts and current of 9 A with a solar array using solar panels. You can use sign of a battery for a solar panel.
Write a short note on electrical energy generation and environment.
Which of the following solar radiations pass through the atmosphere of Earth: X -rays, ultraviolet rays, visible light rays or infrared radiation?
What are the major utilizers of solar energy in the world?
Solar photovoltaic cells convert the solar radiation energy directly into ______ energy.
Give scientific reason.
Hydropower, solar energy and wind energy are called renewable energy.
Complete the following flow chart.
Complete the table.
| Limitations of Solar energy | Limitations of Wind energy |
Solar energy is a non depleting energy. Justify.
Kamuthi solar power project is situated in ______ district in Tamil Nadu.
______ is considered as a great source of energy.
