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प्रश्न
Name the energy transfers which occur when : a torch is on
उत्तर
A torch converts electrical energy of the battery into light and heat energy.
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संबंधित प्रश्न
A ball is placed on a compressed spring. What form of energy does the spring possess? On releasing the spring, the ball flies away. Give a reason.
What kind of energy is possessed by the following?
A stone kept on roof-top _______________
What type of energy is possessed : by the piece of stone which is thrown away on releasing the stretched rubber strings of catapult?
Give two examples where a body possesses both, kinetic energy as well as potential energy.
Define the term 'energy' of a body. What is the SI unit of energy.
Name the device or machine which convert :
Light energy into electrical energy.
Name the device or machine which convert :
light energy into heat energy.
Name the energy transfers which occur when : there is a picture on a television screen
Which of the following energy change involves frictional force?
A body of mass 10 kg falls from a height of 20 m to 8 m. Calculate:
- the loss in potential energy of the body, and
- the total energy possessed by the body at any instant? (Take g = 10 m s-2)
