Magnetism and Matter Physics - Magnetism and Matter

• A
  Paramagnetic materials
• ✓
  Ferromagnetic materials
• C
  Diamagnetic materials
• D
  None of these

Answer: B.

• ✓
  $\frac{\mu_0 m}{4 \pi r}$
• B
  $\frac{\mu_0 m}{4 \pi r^2}$
• C
  $\frac{\mu_0 m}{4 \pi r^3}$
• D
  zero

Answer: A.

• ✓
  $\frac{ M }{n}$
• B
  $\frac{ M }{n^2}$
• C
  $\frac{ M }{2 n}$
• D
  $M \times n$

Answer: A.

• A
  angle of dip
• ✓
  angle of declination
• C
  horizontal component of magnetic field
• D
  criticle angle

Answer: B.

• ✓
  $L _{ m }=\frac{5}{6} L_g$
• B
  $L _{ m }=\frac{6}{5} L_{ g }$
• C
  $L_m=L_g$
• D
  $L _{ m }=2 L_{ g }$
  
  

Answer: A.