JEE Main 2014 Physics question
When a rubber-band is stretched by a distance x, it exerts a restoring force of magnitude where a and b are constants. The work done in stretching the unstretched rubber-band by L is -
Answer: (B)
Solution
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When a rubber-band is stretched by a distance x, it exerts a restoring force of magnitude where a and b are constants. The work done in stretching the unstretched rubber-band by L is -
.