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प्रश्न
State two disadvantages of producing electricity from solar energy.
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उत्तर
Disadvantages of using solar panels:
1. The initial cost of a solar panel is sufficiently high.
2. The efficiency of conversion of solar energy to electricity is low.
3. A solar panel produces d.c. electricity which cannot be directly used for many household purposes.
संबंधित प्रश्न
What is geothermal energy?
Name the type of energy (kinetic or potential) possessed by the following:
A moving cricket ball.
Name the type of energy (kinetic energy K or potential energy U) possessed in the given cases:
A moving cricket ball
What do you understand by the kinetic energy of a body?
What is solar energy?
State the energy changes which take place when:
A body released from rest from the top of a building.
Give one example when:
Sound energy changes to electric energy.
Give one example when:
Electrical energy to heat energy.
Match the pairs.
| Group 'A' | Group 'B' | ||
| (1) | Rolling object | (a) | Heat energy |
| (2) | Food | (b) | Atomic energy |
| (3) | Stretched bow | (c) | Kinetic energy |
| (4) | Sunlight | (d) | Potential energy |
| (5) | Uranium |
(e)
|
Chemical energy
|
What are the small particles that can be seen in a beam of light that enters a dark room?
