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प्रश्न
Fill in the blank
Cooking gas converts _______ energy into heat energy.
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उत्तर
Cooking gas converts chemical energy into heat energy.
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संबंधित प्रश्न
A certain household has consumed 250 units of energy during a month. How much energy is this in joules?
Fill in the blank
The S.I.unit of energy is ______
Match the following columns
| COLUMN A | COLUMN B |
| 1. Running water | 1. heat energy |
| 2. Burning | 2. vibrations |
| 3.Energy | 3.atom bomb |
| 4.Sound energy | 4.kinetic energy |
| 5.Nuclear energy | 5.joule |
Select the correct alternatives
When a bulb lights up on passing current, the change of energy is
Select the correct alternatives
The correct statement is
Give a reason for the following.
The efficiency of a machine is always less than 100%.
How many joules are there in one kilowatt-hour?
A certain household consumes 650 units of electricity in a month. How much is this electricity in joules?
Can you tell?
What should be taken into account for measuring work?
A ball is dropped from a height of 10 m. If the energy of the ball reduces by 40% after striking the ground, how much high can the ball bounce back? (g = 10 m s–2)
