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Work and Energy...

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  • Question 1
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    Kilowatt-hour is the unit of :

  • Question 2
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    When velocity of a moving object is doubled its:

  • Question 3
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    An electric kettle is rated as $$2.5\ kW, \ 250\ V$$. Find the cost of running the kettle for two hours at $$60\ \text{paisa}/\text{unit}$$.

  • Question 4
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    An air conditioner is rated $$240\ V, 1.5\ kW$$. The air conditioner is switched on $$8\ hrs$$ each day. What is electrical energy consumed in $$30\ days$$?

  • Question 5
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    Unit of work in MKS system is

  • Question 6
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    According to the law of conservation of energy, total energy is

  • Question 7
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    Which of the following physical quantities is different from others?

  • Question 8
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    A ball is projected upwards. As it rises, there is increase in its:

  • Question 9
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    What is one unit of household electrical energy in J?

  • Question 10
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    A body is acted upon by a force that is proportional to the distance covered. If the distance covered is denoted by x, then work done by the force will be proportional to :

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