COMEDK2015PhysicsElectromagnetic Waves
The refractive index and the permeability of a medium are respectively 1.5 and 5 10⁻⁷ Hm ⁻¹ . The relative permittivity of the medium is nearly
Options
- A25
- B15
- C6
- D10
Correct answer
C. 6
Step-by-step solution
Given, refractive index of the medium, n=15 Permeability of the medium, =5 10⁻⁷ Hm ⁻¹ Relative permeability of the medium, _ r = ₀ = 5 10⁻⁷ 4 10⁻⁷ = 5 4 We know that, refractive index, aligned n &= _ r _ r n² &= _ r _ r _ r &= n² _ r = (1.5)² 5 / 4 &= (1.5)² 4 5 =5.7 6 aligned