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PhysicsJEE Main 24 Jan 2026, Shift 1·Q21·Numerical·Easy–moderate

Magnetism and Matter · Bar magnet

A short bar magnet placed with its axis at 30∘30^\circ with an external field of 800 Gauss, experiences a torque of 0.016 N.m. The work done in moving it from most stable to most unstable position is α×10−3\alpha\times10^{-3} J. The value of α\alpha is .

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