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Question

A man pushes a wall and fails to displace it. He does :

A
Negative work
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B
Positive but not maximum work
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C
Maximum work
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D
No work at all
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Solution

The correct option is D No work at all
As we know work done is Force X Displacement
If a person tries to push the wall he applies the force but displacement is zero, so product of force and displacement will be zero. So work done is zero.
so option D is correct.

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