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JEE Main Physics question

PhysicsWork, Energy and PowerJEE Main

Two springs A and B are identical but A is harder than B (kA > kB). Let WA and WB represent the work done when the springs are stretched through the same distance, and W'A and W'B are the work done when these are stretched by equal forces, then which of the following is true? [AMU PMT 2009]

Answer: (B)

Solution

For the same extension x, W = ½kx², so since kA > kB, WA > WB. For the same applied

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Question ID VK-153902