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प्रश्न
State four ways for the judicious use of energy.
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उत्तर
Four ways for the judicious use of energy:
(a) The fossil fuels such as coal, petroleum, natural gas should be used only for the limited purposes when there is no other alternative source of energy available.
(b) The wastage of energy should be avoided.
(c) Efforts must be made to make use of energy for community or group purposes.
(d) The cutting of trees must be banned and more and more new trees must be roped to grow.
संबंधित प्रश्न
State two factors on which the kinetic energy of a moving body depends.
State two disadvantages of producing electricity from solar energy.
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What do you understand by the kinetic energy of the body?
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A shooting arrow.
Obtain an expression for the potential energy of a body of mass m at a height h above the ground.
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A body of mass m is taken from a height h to 2h. What is the increase in its potential energy?
What ts the original source of energy for the electricity produced at a thermal power station?
