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प्रश्न
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उत्तर
Whenever one form of energy dissipates or disappears, another form of equivalent amount of energy is produced; this is referred to as transformation of energy.
E.g. when a particular switch is pressed electric lamps light up owing to the heat produced in the filament. This is the transformation of electrical energy to heat and light energy.
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संबंधित प्रश्न
Write true or false of the following statement.
The energy of flowing water can be converted into electric energy (electricity).
Give one example of a body that has potential energy, due to its position at a height.
How is wind energy used to produce electricity?
State four ways for the judicious use of energy.
Name the form of energy in which potential energy can change.
What do you understand by the kinetic energy of the body?
State two advantages and disadvantages of using nuclear energy for producing electricity.
State the energy changes which take place when:
A bulb glows, when torchlight is switched on.
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]
For the same kinetic energy of a body, what should be the change in its velocity if its mass is increased nine times?
