Advertisements
Advertisements
प्रश्न
Can you tell?
Describe one natural chain of transformation of energy.
उत्तर
One natural chain of energy transformation is photosynthesis. Solar energy is converted into light energy, which plants use to produce chemical energy (glucose). This chemical energy is stored in plants and transferred through the food chain, powering various life processes.
संबंधित प्रश्न
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.
Can a body possess energy even when it is not in motion ? Explain your answer with an example.
Name the type of energy (kinetic or potential) possessed by the following:
A moving bus.
Name the type of energy (kinetic energy K or potential energy U) possessed in the following case:
A piece of stone placed on the roof.
What is a solar cell?
Name two examples in which the mechanical energy of a system remains constant.
Give three examples of bodies possessing kinetic energy.
What kind of energy is possessed in a situation when?
A stone, in a stretched catapult.
Obtain an expression for the potential energy of a body of mass m at a height h above the ground.
State the energy changes which take place when:
A magnesium ribbon burns in air.
