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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
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.)
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What is geo thermal energy? Explain in brief.
Renewable source of energy is:
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For the same kinetic energy of a body, what should be the change in its velocity if its mass is increased nine times?
Use your brain power!
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