A certain substance is placed in a longitudinal magnetic field of a solenoid located between two...
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A certain substance is placed in a longitudinal magnetic field of a solenoid located between two Polaroids. The length of the tube with substance is equal to \( l=30 \mathrm{~cm} \). Find the Verdet constant if at a field strength \( H=56.5 \mathrm{kA} / \mathrm{m} \) the angle of rotation of polarization plane is equal to \( \phi_{1}=+5^{\circ} 10^{\prime} \) for one direction of the field and to \( \phi_{2}=-3^{\circ} 20^{\prime} \), for the opposite direction.
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