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प्रश्न
Give two examples each of renewable and non-renewable sources of energy?
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उत्तर
Renewable sources of energy: Solar energy and wind energy.
Non-renewable sources of energy: coal and oil.
संबंधित प्रश्न
A bucket full of water .is on the first floor of your house and another identical bucket with same quantity of water is kept on the second floor. Which of the two has greater potential energy ?
Give one relevant example for the following transformation of energy :
Electrical energy to light energy.
How is wind energy used to produce electricity?
How much hydroelectric power is generated in India?
Name the energy changes for the following:
pendulum
State the energy changes which take place when:
A battery lighting up a bulb.
Give one example when:
Electric energy changes to potential energy.
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]
A body of mass m is taken from a height h to 2h. What is the increase in its potential energy?
Name the type of energy (kinetic energy K or potential energy U) possessed in the following case:
A moving cricket ball
