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प्रश्न
State the energy changes which take place when An electric bulb glows when it is connected to a source of electric current.
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उत्तर
Electrical energy (electric current) → light energy + Heat energy (bulb).
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संबंधित प्रश्न
Derive a relationship between S.I. and C.C.S. unit of work
Explain by an example that a body may possess energy even when it is not in motion.
Each of the following statement describes a force acting. Which force is causing work to be done?
What is the work done when the object acted upon by a force remains at rest?
Complete the following sentences:
The SI unit of work is ....... and of power is .......
List any six forms of energy and write a short note on each of them.
Fill in the boxe to show the corresponding energy transformation.
In the following case write yes, if the work is being done and no if no work is being done.
A coolie standing with a heavy load on his head
Mention whether work is done or not in the following activity.
| S. No | Activity | Work done or not done |
| 1. | Pushing the door | |
| 2. | Holding a doll | |
| 3. | Sitting in a bus | |
| 4. | Pushing a wall | |
| 5. | Digging soil |
