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प्रश्न
Write five forms of energy.
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उत्तर
(i) Mechanical energy
(ii) Chemical energy
(iii) Solar energy
(iv) Heat energy
(v) Light energy.
संबंधित प्रश्न
State the energy changes in the following case while in use:
an electric toaster.
How much hydroelectric power is generated in India?
Explain the principle of producing electricity using the nuclear energy.
State the energy transformation on the following:
Electricity is obtained from wind energy.
State four ways for the judicious use of energy.
What do you understand by the potential energy of the body?
A ball of mass 50 g falls from a height of 2m and rebounds from the ground to 1.6 m. Find:
(i) The potential energy possessed by the ball when initially at rest.
(ii) The kinetic energy of the ball before it hits the ground.
(iii) The final potential energy of the ball.
(iv) The loss in kinetic energy of the ball on collision. (Take: g = 10N kg−1)
Match the pairs.
| Group 'A' | Group 'B' | ||
| (1) | Rolling object | (a) | Heat energy |
| (2) | Food | (b) | Atomic energy |
| (3) | Stretched bow | (c) | Kinetic energy |
| (4) | Sunlight | (d) | Potential energy |
| (5) | Uranium |
(e)
|
Chemical energy
|
In which states is water found in nature?
You do not have rangoli powder. What things can you use as an alternative?
