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संबंधित प्रश्न
A certain form of energy which is not sourced directly or indirectly from the sun and does not cause any pollution is very easily converted into electricity. This form of energy is, however, not available everywhere. Moreover, it is technically very difficult and expensive to obtain it. Name the form of energy.
What is meant by the renewable and non-renewable sources of energy? Distinguish between them giving two examples of weach.
State two disadvantages of producing electricity from solar energy.
Show that the quantity 2K/v2 has the unit of mass, where K is the kinetic energy of the body.
A pebble is thrown up. It goes to a height and then comes back on the ground. State the different changes in form of energy during its motion.
Obtain an expression for the potential energy of a body of mass m at a height h above the ground.
State the energy changes which take place when:
A bulb glows, when torchlight is switched on.
Give one example when:
Electrical energy to heat energy.
Show that in case of a body falling freely under gravity, total mechanical energy remains conserved (neglect air resistance).
What is nuclear energy? Explain the principle of producing electricity using nuclear energy is a nuclear reactor.
