JEE Main202120 Jul 2021Evening ShiftPhysicsMagnetic Properties of MatterActual
The magnetic susceptibility of a material of a rod is 499 . Permeability in vacuum is 4 π × 10 - 7 Hm - 1 . Absolute permeability of the material of the rod is
Options
- A4 π × 10 - 4   Hm - 1
- B2 π × 10 - 4   Hm - 1
- C3 π × 10 - 4   Hm - 1
- Dπ × 10 - 4   Hm - 1
Correct answer
B. 2 π × 10 - 4   Hm - 1
Step-by-step solution
μ = μ 0 1 + x m = 4 π × 10 - 7 × 500 = 2 π × 10 - 4   Hm - 1