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प्रश्न
How much hydro-electric power is generated in India?
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उत्तर
At present, 23% of the total electricity is generated in India using hydro-energy.
संबंधित प्रश्न
Which of the following produces more heat (per unit mass) on burning?
State two disadvantages of geothermal energy.
Geothermal energy is produced by the:
(a) fission of radioactive materials
(b) burning of coal inside the coal mines
(c) combustion of natural gas deep inside the earth
(d) fusion of radioactive substances
Give one example to show that the sum of potential energy and kinetic energy remains constant if friction is ignored.
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.
What kind of energy is possessed in a situation when?
Water stored in dams.
State the energy changes which take place in Electricity is obtained from solar energy.
State the energy changes which take place when:
Photographic film is exposed to sunlight.
A body of mass 50 kg has a momentum of 3000 kg−1 ms. Calculate:
(j) the kinetic energy of the body.
(ii) the velocity of the body.
