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प्रश्न
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 .
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उत्तर
Potential energy.
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संबंधित प्रश्न
Give one relevant example for the following transformation of energy:
Electrical energy to heat energy.
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 .
A boy of mass m climbs up a staircase of vertical height h.
(a) What is the work done by the boy against the force of gravity?
(b) What would have been the work done if he uses a lift in climbing the same vertical height?
State the energy changes in the following case while in use:
an electric cell in a circuit
State whether a solar cell produces a.c. or d.c.
MULTIPLE CHOICE TYPE:
The ultimate source of energy is:
(a) wood
(b) wind
(c) water
(d) sun
Name the form of energy in which potential energy can change.
Give one example when:
Mechanical energy changes to electric energy.
Give one example when:
Mechanical energy to heat energy.
What is nuclear energy? Explain the principle of producing electricity using nuclear energy is a nuclear reactor.
