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Q.

Is it true that work done is a vector quantity?


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a

True

b

False 

answer is B.

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Detailed Solution

The above statement is False.
Work done is a scalar quantity, its SI unit is Joules, the same as that of energy. But in spite of being a scalar quantity, work can be positive, negative, and zero. But it does not follow the vector laws of addition. It can be added algebraically like all other scalar quantities.
The correct statement would work with only a magnitude but no direction. The formula for work is written as a product of force and displacement. Therefore, work is a scalar quantity.
 
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