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प्रश्न
State the energy transformation on the following:
Electricity is obtained from solar energy.
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उत्तर
Light energy into electrical energy
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या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
संबंधित प्रश्न
Look at the activity below. Reason out whether or not work is done in the light of your understanding of the term ‘work’.
A sailboat is moving due to wind energy.
Can there be displacement of an object in the absence of any force acting on it? Think. Discuss this question with your friends and teacher.
The moon is revolving around the earth in a circular path. How much work is done by the moon?
What is the condition for a force to do work on a body?
Nm is the unit of .......
What are the physical parameters on which the kinetic energy of a body depends?
Name four different forms of energy.
Write the S.I. units of power.
A body does 20 J of work in 10 s. What is its power?
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 |
