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When electric current flows through a bu...

When electric current flows through a bulb, the electric enery first changes into light energy and then heat energy.

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BEIITIANS-ENERGY AND WORK -SUMMATIVE WORKSHEET
  1. Work is done when we hold a pile of books in our hands.

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  2. Work done by a body is the product of pressure and displacement.

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  3. When electric current flows through a bulb, the electric enery first c...

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  4. When we speak in front of a microphone the electric energy changes int...

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  5. During photosynthesis heat energy changes into chemical energy.

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  6. In charging a car battery, the chemical energy changes into electric e...

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  7. Nuclear energy is released in the form of light energy.

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  8. When a stone is projected vertically upwards its kinetic energy change...

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  9. Kinetic energy of a body decreases with the increase in mass.

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  10. Unit of energy is SI system is

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  11. A stretched bow and arrow system has kinetic energy.

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  12. The energy possessed by an electric cell is chemical energy.

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  13. During photosynthesis, the light energy changes into chemical energy.

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  14. An electric bulb converts electric energy into heat energy.

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  15. The source of energy in a nuclear bomb is chemical energy.

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  16. A freely falling stone possesses K.E and P.E.

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  17. In hydroelectric stations, the potential energy of flowing water chang...

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  18. The work done by a body is the product of force and :

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  19. Name and define SI unit of work.

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  20. Burning of paper is an example of conversion of :

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