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A spring 40 mm long is stretched by the ...

A spring 40 mm long is stretched by the application of a force. If 10 N force required to stretch the spring through 1mm, then the work done in stretching the spring through 40 mm is

A

84 J

B

68 J

C

23 J

D

8 J

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The correct Answer is:
D
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ERRORLESS -WORK, ENERGY, POWER & COLLISION-Assertion
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