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प्रश्न
State the energy changes which take place when:
A bulb glows, when torchlight is switched on.
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उत्तर
The chemical energy of cell changes to electric energy. The electric energy first changes to heat and finally to light energy.
संबंधित प्रश्न
Calculate the change in the Kinetic energy of a moving body if its velocity is reduced to 1/3rd of the initial velocity.
What name is given to the heat energy obtained from hot rocks inside the earth?
Write true or false of the following statement.
There is always some loss of energy in conversion from one form of energy to another form, so the total energy is not conserved.
Name five different forms of energy.
Name the type of energy (kinetic or potential) possessed by the following:
A bullet fired from a gun.
A ball is made to fall freely from a height. State the kind/ kinds of energy possessed by the ball when it is just in the middle .
What is tidal? Explain in brief.
A girl of mass 35 kg climbs up from the first floor of a building at a height 4 m above the ground to the third floor at a height 12 m above the ground. What will be the increase in her gravitational potential energy? [g = 10 ms-2]
