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A man pushes a wall and fails to displace it, then (1) Work done by him is positive  (2) Work done by him is negative 

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A man pushes a wall and fails to displace it, then

(1) Work done by him is positive 

(2) Work done by him is negative 

(3) No work is done by him 

(4) All of these

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1 Answer

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Correct option is (3) No work is done by him 

Work = Force x Displacement

As man fails to displace the wall, displacement of the wall is zero. [Applied force is not zero]

So, the work done will be zero.

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