Advertisements
Advertisements
प्रश्न
Fill in the blank
Solar cells use the power supplied by the ______.
Advertisements
उत्तर
Solar cells use the power supplied by the Sunlight.
APPEARS IN
संबंधित प्रश्न
Compare and contrast fossil fuels and the Sun as direct sources of energy
"The ignition temperature of a fuel is 80°C". What does this mean?
Name two sources of energy which you consider to be non-renewable. Give reason for your choice.
Describe how fossil fuels were formed.
Which fossil fuel formed by the buried remains of large land plants?
Fossil fuels are energy rich compounds of an element X which were originally made by the plants with help of sun's energy.
Name the element X.
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
What should be the minimum wind speed for the satisfactory working of a wind-powered electric generator?
Name the clean fuel which can be obtained from cow-dung.
Apart from cattle dung, what other substances can be added to a biogas plant?
Fill in the following blank with suitable word:
Tidal waves build up and recede ........... a day.
Suggest a safe and efficient method for the disposal of biowastes and sewage materials. How is this method advantageous to us?
What are the raw materials used for making biogas?
Describe the construction and working of a biogas plant with the help of a labelled diagram.
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?
What is the main difference between renewable and non-renewable energy resources?
What do you know about wind energy?
In a hydro power plant ______.
Choose the odd one:
Choose the incorrect statement regarding wind power
