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प्रश्न
State four ways for the judicious use of energy.
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.
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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).
Fill in the blank
The energy possessed by a body due to its position is called ________ energy.
Name the type of energy (kinetic or potential) possessed by the following:
A stretched rubber band.
Give one relevant example for the following transformation of energy:
Electrical energy to mechanical energy.
Give one relevant example for the following transformation of energy :
Chemical energy to light energy.
State different forms of potential energy and give one example of each.
What is hydro energy?
Name the energy changes for each of the following cases:
dynamo
State the energy changes which take place when:
An air gun is loaded and then fired.
Calculate the change in the Kinetic energy of a moving body if its velocity is reduced to 1/3rd of the initial velocity.
