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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 bucket full of water .is on the first floor of your house and another identical bucket with same quantity of water is kept on the second floor. Which of the two has greater potential energy ?
Define the term kinetic energy. Give one example of a body which possesses kinetic energy.
State two factors on which the kinetic energy of a moving body depends.
Name the type of energy (kinetic energy K or potential energy U) possessed in the given cases:
A moving cricket ball
Name the type of energy (kinetic energy K or potential energy U) possessed in the given cases:
A moving bus
A metal ball of mass 2kg is allowed to fall freely from rest from a height of 5m above the ground.
What the kinetic energy of the ball just before it hits the ground ?
What kind of energy is possessed in a situation when?
An electron spinning around the nucleus.
State two advantages and disadvantages of using wind energy for producing electricity.
In which states is water found in nature?
