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JEE Main Physics question

PhysicsWork, Energy and PowerJEE Main

A spring, which is initially in its unstretched condition, is first stretched by a length x and then again by a further length x. The work done in the first case is W₁, and in the second case is W₂. [UP SEE 2008]

Answer: (C)

Solution

W₁ = ½kx². Stretching further by x (total stretch 2x) requires total energy ½k(2x)² =

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Question ID VK-153564