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प्रश्न
(i) The conversion of part of the energy into an undesirable form is called ______________.
(ii) For a given height h, __________________ the length l of the inclined plane, lesser will be the effort required.
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उत्तर
(i) The conversion of part of the energy into an undesirable form is called dissipation of energy.
(ii) For a given height h, more the length l of the inclined plane, lesser will be the effort required.
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संबंधित प्रश्न
State the energy change in the following device while in use:
A glowing electric bulb.
Name the type of energy (kinetic or potential) possessed by the following:
A compressed spring.
Give one example to show the conversion of potential energy to kinetic energy when put in use.
A ball is made to fall freely from a height. State the kind/ kinds of energy possessed by the ball when it is at the highest point .
State the energy transformation on the following:
Electricity is obtained from nuclear energy.
Write five forms of energy.
What happens to the K.E. when
(i) the mass of the body is doubled at a constant velocity and
(ii) the velocity of the body is doubled at constant mass?
State the energy changes which take place when:
An air gun is loaded and then fired.
Energy from various sources is considered to have been derived from the sun. Do you agree? Justify your answer.
