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40. Which of the diagrams correctly show...

40. Which of the diagrams correctly shows the change in kinetic energy of an iron sphere falling freely in a lake having sufficient depth to impart it a terminal velocity ?

A

B

C

D

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The correct Answer is:
B
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AAKASH SERIES-WORK POWER ENERGY-EXERCISE - 1A
  1. A raindrop falling from a height .h. above ground, attains a near term...

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  2. A heavy stone is thrown from a cliff of height h in a given direction....

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  3. 40. Which of the diagrams correctly shows the change in kinetic energy...

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  4. A proton is kept at rest. A positively charged particle is released fr...

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  5. Statement - A : Heat energy required for burning a case of rocket in f...

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  6. Statement - A : Work done by a man in lifting a bucket out of a well b...

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  7. Statement - A : When a conservation force does positive work on a bod...

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  8. A body is initially at rest. It under goes one - dimension motion with...

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  9. A vertical spring with force constant .k. is fixed on a table. A ball ...

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  10. An engine pumps water continuously through a hose Water leaves the hos...

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  11. The potential energy of a system increases if work is done

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  12. A body projected vertically from the earth reaches a height equal to e...

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  13. The potential energy of a particle in a force filled is U=(A)/(r^(2))-...

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  14. A car of mass .m. starts from rest and accelerates so that the instant...

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  15. A particle of mass .m. is driven by a machine that delivers constant p...

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  16. Kinetic energy, with any reference, must be

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  17. Which of the following is a non - conservative force ?

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  18. A molecule of mass m of an ideal gas collides with the wall of a vesse...

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  19. If a spring extends by x on loading, then energy stored by the spring ...

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  20. A bullet is fired from a rifle. If the rifle recoils freely, then the ...

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