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प्रश्न
What is the main energy transformation that occur in:
Photosynthesis in green leaves.
उत्तर
Light energy of chemical energy.
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संबंधित प्रश्न
What is geothermal energy?
Define calorific value of a fuel.
A certain form of energy which is not sourced directly or indirectly from the sun and does not cause any pollution is very easily converted into electricity. This form of energy is, however, not available everywhere. Moreover, it is technically very difficult and expensive to obtain it. Name the form of energy.
Give one relevant example for the following transformation of energy:
Electrical energy to mechanical energy.
A body of mass m falls down through a height h. Obtain an expression for the work done by the force of gravity.
State the energy changes which take place when:
A stone projected vertically upwards, returns back to the thrower.
State the energy changes which take place when:
A battery lighting up a bulb.
Give one example when:
Light energy changes to chemical 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
|
