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प्रश्न
Give an example
Chemical energy changes to electrical energy.
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उत्तर
Dry cell
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संबंधित प्रश्न
In each of the following a force, F is acting on an object of mass, m. The direction of displacement is from west to east, as shown by the longer arrow. Observe the diagrams carefully and state whether the work done by the force is negative, positive or zero.
When does a force perform work?
Fill in the blank with suitable word :
Work is measured as a product of __________ and __________
Explain by an example that a body may possess energy even when it is not in motion.
What happens to the work done when the dispacement of body is at right angles to the direction of force acting on it? Explain your answer.
A uniform circular motion is an accelerated motion. Justify it.
A 100 W electric lamp emits energy in the form of light at the rate 10 J per second. What percentage of electric energy does the lamp transform into light energy?
List any six forms of energy and write a short note on each of them.
Name two places in India where electricity is generated from nuclear power plants.
