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प्रश्न
Select the correct alternatives
The energy stored in an electric cell is
पर्याय
chemical energy
electrical energy
heat energy
mechanical energy.
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उत्तर
chemical energy
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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.
What do you understand by the kinetic energy of a body?
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.)
State the energy transformation on the following:
Electricity is obtained from nuclear energy.
Name the energy changes for the following:
pendulum
State two advantages and disadvantages of using wind energy for producing electricity.
What is the form of that graph between
(i) K.E. and velocity for a constant mass?
(ii) K.E. and mass for a constant velocity?
A body of mass 0.2 kg falls from a height of 10 m to a height of 6 m above the ground. Find the loss in potential energy taking place in the body. [g = 10ms−2]
A body is thrown vertically upwards. Its velocity keeps on decreasing. What happens to its kinetic energy as its velocity becomes zero?
