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Work done in a system is ___

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in Physics – Class 11 by (74.2k points)
Work done in a system is ___

(a) The measure of energy change

(b) The measure of useful work

(c) The measure of displacement

(d) The measure of force

The question was asked in class test.

My enquiry is from Work topic in division Work, Energy and Power of Physics – Class 11

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The correct option is (a) The measure of energy change

For explanation I would say: Work done in any system is a measure of the energy change in the system with its surroundings. Work done and energy change are in practice the same. When a force is applied on a body and it moves and does some work. The amount of work done denotes energy change of the system with its surroundings.

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