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प्रश्न
Can you tell?
Which forms of energy from the sun are used in solar energy devices?
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उत्तर
Solar energy devices use two primary forms of energy from the sun:
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Light Energy: Utilized in solar photovoltaic (PV) cells to convert sunlight directly into electricity.
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Heat Energy: Harnessed in solar thermal devices, such as solar water heaters, solar cookers, and concentrated solar power (CSP) systems, to generate heat or electricity.
संबंधित प्रश्न
What is meant by a renewable source of energy? Give two examples of renewable sources of energy.
Name two sources of energy which you consider to be non-renewable. Give reason for your choice.
An examples of a renewable source of energy is:
(a) petrol
(b) natural gas
(c) biogas
(d) kerosene
Which of the following is not a renewable source of energy?
(a) wind
(b) flowing water
(c) fossil fuels
(d) fuel wood
The energy in petrol originally came from the sun. Explain how it got into petrol.
The pollution of air caused by burning petroleum fuels (like petrol and diesel) in vehicles can be controlled by fitting a device X in the exhaust system of vehicles.
Name the device
The fuel which is not obtained from biomass is:
(a) firewood
(b) cow-dung cakes
(c) coke
(d) charcoal
Which produced of the nuclear fission of uranium-235 is utilised to cause further fission of its nuclei?
An energy efficient devices for producing light is:
(a) DLF
(b) CFL
(c) FCL
(d) LPG
Why petrol is exhaustible natural resource, whereas sunlight is not? Explain.
