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Assertion : The power of a pump which ...

Assertion : The power of a pump which raises 100 kg of water in 10 sec to a height of 100 m is 10 KW . Reason : The practical unit of power is horse power.

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SL ARORA-Work, Energy and power-EXERCISE
  1. The potential energy when two protons are brought closer and the poten...

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  2. What is work done in holding a 15kg suitcase while waiting for a bus f...

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  3. Assertion : The power of a pump which raises 100 kg of water in 10...

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  4. A motor boat is moving at a steady speed of 20ms^(-1). If the water re...

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  5. A stone projected vertically upwards from the ground reaches a maximum...

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  6. A particle of mass 4 m which is at rest explodes into three fragments....

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  7. The kinetic energy of a body decreases by 20%. What is the percentage ...

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  8. The power of an agent at any instant is equal to the dot product of it...

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  9. Two identical particles move --------- to eachother after elastic coll...

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  10. For a perfectly inelastic collision, the relative velocity of separati...

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  11. For a superelastic collision, the coefficient of restitution is-------...

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  12. Gravitation force is a ----------- force while force of friction is a...

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  13. A conservative force is equal to the negative gradient of ------------...

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  14. The earth, moving around the sun in a circular orbit, is acted upon by...

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  15. True / False type questions : A body is moving along a circular path. ...

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  16. True / False type questions : It is necessary that the work done in th...

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  17. True / False type questions : Chemical, gravitational and nuclear ener...

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  18. True / False type questions : Work done by a body against friction res...

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  19. True / False type questions : In an elastic collision of two bodies, t...

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  20. True / False type questions : Total energy of a system is always conse...

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