A certain substance is placed in a longitudinal magnetic field of a solenoid located between two Polaroids. The length of the tube wity substance is equal to `l = 30 cm`. Find the verdet constant if at a field strength `H = 56.5 kA//m`, the angle of rotation of polarization plane is equal to `varphi_(1) =+ 5^(@) 10`' for one direction of the field and to `varphi_(2) =- 3^(@) 20`,' for the opposite direction.

A tube of length l = 26 cm is filled with benzence and placed in a longitudinal magnetic field of a solenoid positioned between two Polaroids. The angle between the principle directions of the Polaroids is equal to 45^(@) . Find the minimum strength of the magnetic field at which light of the wavelength 589 nm propagates through that system only in one direction (optical value). What happens if teh idrection of the given magnetic field is changed to the opposite one?

The induced emf in a coil rotating in a magnetic field is maximum when the angle between the plane of the coil and the direction of field is :

A bar of diamagnetic substance is placed in a magnetic field with its length making angle theta with the direction of the magnetic field. How will the bar behave ?

A bar of diamagnetic substance is placed in a magnetic field with its length making angle theta with the direction of the magnetic field. How will the bar behave ?

A bar of diamagnetic substance is placed in a magnetic field with its length making angle theta with the direction of the magnetic field. How will the bar behave ?

A bar of diamagnetic substance is placed in a magnetic field with its length making angle 30^@ with the direction of the magnetic field, the bar behaviour is given by the statement ?

A coil of self-inductance L is placed in an external magnetic field (no current flows in the coil). The total magnetic flux linked with the coil is varphi . The magnetic field energy stored in the coil is