Magnetism JEE physics - Magnetism

• A
  Is permanently magnetized
• B
  Remains ferromagnetic
• C
  Behaves like a diamagnetic material
• ✓
  Behaves like a paramagnetic material

Answer: D.

• A
  Directly proportional to $T$
• B
  Remains constant
• ✓
  Inversely proportional to $T$
• D
  Exponentially decaying with $T$

Answer: C.

• ✓
  $V > H$
• B
  $V_1$
• C
  $V=H$
• D
  $V=H=0$

Answer: A.

• A
  This effect is common to all ferromagnetic substances
• B
  The hysteresis loop area is proportional to the thermal energy developed per unit volume of the material
• ✓
  The hysteresis loop area is independent of the thermal energy developed per unit volume of the material
• D
  The shape of the hysteresis loop is characteristic of the material

Answer: C.

• A
  $\frac{H}{2}$
• ✓
  $\frac{2 H}{\sqrt{3}}$
• C
  $H \sqrt{2}$
• D
  $H \sqrt{3}$

Answer: B.