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प्रश्न
State two advantages of producing electricity from solar energy.
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उत्तर
Advantages of using solar panels:
1. They do not cause any pollution in the environment.
2. Running cost of solar panel is almost zero.
3. They last over a long period of time.
4. They do not require any maintenance.
5. They are suitable for remote and inaccessible places where electricity power lines cannot be laid.
संबंधित प्रश्न
Write true or false of the following statement.
The energy of flowing water can be converted into electric energy (electricity).
Select the correct alternatives
A ball rolling on the ground possesses
Give one example of a body that has potential energy, due to its position at a height.
Write an expression for the potential energy of a body of mass m placed at a height h above the earth's surface. State the assumptions made, if any.
State the energy changes in the following case while in use:
a ceiling fan
Name five renewable sources of energy.
Name the energy change for the following:
pendulum
Show that the quantity 2K/v2 has the unit of mass, where K is the kinetic energy of the body.
A girl of mass 35 kg climbs up from the first floor of a building at a height 4 m above the ground to the third floor at a height 12 m above the ground. What will be the increase in her gravitational potential energy? [g = 10 ms-2]
In which states is water found in nature?
