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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 a source of energy? What are the two main categories of the sources of energy?
What is meant by a renewable source of energy? Give two examples of renewable sources of energy.
Calorific value and ignition temperature of fuel X are 75 kJ/g and 20°C respectively. These values for fuel Y are 50 kj/g and 75°C respectively. On burning, the fuel Y produces only CO2while fuel X produces CO2 and CO. Which of the two is a better fuel? Give two reasons to support your answer.
Complete the following sentence:
Domestic gas cylinders like Indane contain mainly ..............
The product of petroleum used to drive heavy vehicles like trucks is:
(a) petrol
(b) kerosene
(c) diesel
(d) carbon oxide
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
A certain form of energy is available due to the difference in the temperature of water at the surface of the ocean and its deeper levels.
(a) Name the form of energy.
(b) Is this energy ultimately derived from the sun or not?
(c) Explain how this form of energy can be converted into electricity.
(d) What is the minimum temperature difference in water at the surface of ocean and its deeper level which is required to operate power plants based on is energy?
The fossil fuel whose known reserves in the earth are expected to last for the minimum period is:
(a) coal
(b) uranium
(c) petroleum
(d) natural gas
Renewable source of energy is :
Which part of the solar cooker is responsible for greenhouse effect?
