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प्रश्न
State the energy transformation on the following:
Electricity is obtained from solar energy.
उत्तर
Light energy into electrical energy
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संबंधित प्रश्न
Write an expression for the work done when a force is acting on an object in the direction of its displacement.
When does a force perform work?
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1 J = ______ calorie.
Is work a scalar or a vector quantity?
Fill in the blank with suitable word :
The work done on a body moving in a circular path is __________
How many watts equal one horse power?
Choose one or more correct alternatives.
For work to be performed, energy must be ______.
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- concentrated
- transformed from one type to another
- destroyed
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No work is done by a man moving on a horizontal road while carrying a box on his head. Explain.
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Look at the activity below. Reason out whether or not work is done in the light of your understanding of the term ‘work’.
A donkey is carrying a load on its back.
Look at the activity below. Reason out whether or not work is done in the light of your understanding of the term ‘work’.
A wind-mill is lifting water from a well.
