Units and Measurements: JEE Main 2025 Physics question

JEE Main 2025 · 28 Jan, Evening shift · Q37

JEE Main 202528 Jan, Evening shiftPhysicsMediumUnits and Measurements122× since 2002

A bar magnet has total length

2l = 20

units and the field point P is at a distance

d = 10

units from the centre of the magnet. If the relative uncertainty of length measurement is 1%, then uncertainty of the magnetic field at point P is :

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JEE Main 2025 Units and Measurements Question with Solution (28 Jan Evening shift, Q37) | JEE Arc

JEE Main 2025 · 28 Jan, Evening shift · Q37

JEE Main 202528 Jan, Evening shiftPhysicsMediumUnits and Measurements122× since 2002

A bar magnet has total length

2l = 20

units and the field point P is at a distance

d = 10

units from the centre of the magnet. If the relative uncertainty of length measurement is 1%, then uncertainty of the magnetic field at point P is :