Chapter 5 Magnetism and Matter
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See all →- A short bar magnet placed with its axis at 30° with a uniform external magnetic field of 0. 25 T experiences a torque θ = 30°, B = 0.25 T, τ = 4.5 x 10⁻²J, m = ?, τ = mBsinθ ∴ m = τ / mBsinθ = frac4.5 × 10⁻²0.25 × sin 30^(°) = frac4.5 × 10⁻² × 20.25 = 36.0 x... 1
- Show that the magnetic moment of an atom is M = \(\frac { 1 }{ 2 }\)eωr2, where e the charge of an electron The electrons are revolving around the nucleus of an atom. If ‘e’ is the charge of an electron and T its period of revolution, then Current... 1
- According to Bohr’s postulate, angular momentum of an electron is mvr = \(\frac { nh }{ 2π }\). According to Bohr’s postulate, the angular momentum of an electron, mvr = nh / 2π where m – mass of the electron, v – velocity of the electr... 1
- On the basis of magnetic properties, the substances are classified into three (a) On the basis of magnetic properties, different materials are classified into Diamagnetic substances Paramagnetic substances Ferromagneti... 1