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A referigertor has COP of 3 . How much w...

A referigertor has COP of `3` . How much work must be supplied to a refrigertor in order to remove `200J` of heart from its interior?

A

33.33 J

B

44.44 J

C

66.67 J

D

50 J

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PREMIERS PUBLISHERS-QUESTION PAPER MARCH 2019-Part- IV
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  15. Prove the law of conservation of linear momentum use it to find the re...

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  16. State and prove parallel axis theorem

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  17. What is elastic collision ? Derive an expression for final velocities ...

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  19. Derive Mayer's relation for an ideal gas.

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  20. Explain the horizontal oscillations of a spring.

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  21. Write down the equation of a freely falling body under gravity.

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