Advertisements
Advertisements
प्रश्न
State two advantages of producing electricity from solar energy.
Advertisements
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
A boy of mass m climbs up a staircase of vertical height h.
(a) What is the work done by the boy against the force of gravity?
(b) What would have been the work done if he uses a lift in climbing the same vertical height?
Name the type of energy (kinetic energy K or potential energy U) possessed in the given case:
An arrow shot out of a bow.
State different forms of potential energy and give one example of each.
A light mass and a heavy mass have equal momentum. Which will have more kinetic energy?
(Hint : Kinetic energy K = P2/2m where P is the momentum.)
A body of mass 5 kg falls from a height of 10 m to 4 m. Calculate:
The total energy possessed by the body at any instant? (Take g = 10 ms-2).
Write five forms of energy.
Name the two groups in which various sources of energy are classified?
State two advantages and two disadvantages of using hydro-energy for producing electricity.
Give one example when:
Heat energy changes to kinetic energy.
Use your brain power!
How do we save fuel by using public transport?
