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A force of F=0.5 N is applied on lower b...

A force of F=0.5 N is applied on lower block as shown in figure. The work done by lower block on upper block for a displacement of 3 m of the upper block with respect to ground is (Take, g=10 `ms^(-2)`)

A

1 joule

B

`-1` joule

C

2 joule

D

`-2` joule

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The correct Answer is:
B
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