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JEE Main Physics question

PhysicsUnits and MeasurementJEE Main

The focal length of a mirror is given by , where and represent object and image distances respectively. The maximum relative error in is

Answer: (A)

Solution

Differentiating gives , and taking all errors as adding (for the maximum case), f^2($Missing argument for \dfrac\dfrac{Δ

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Question ID VK-157130