Electromagnetic waves travel in a medium which has relative permeability 1.3 and relative permittivity 2.14. Then the speed of the electromagnetic wave in the medium will be

Question

Electromagnetic waves travel in a medium which has relative permeability 1.3 and relative permittivity 2.14. Then the speed of the electromagnetic wave in the medium will be (A)  13.6 × 106 m/s  (B)  1.8× 102 m/s  (C)  3.6 × 108 m/s  (D)  1.8× 108 m/s

Tardigrade Admin · Accepted Answer

The speed of electromagnetic wave in medium is upsilon =(c/√μ rε r)=(3× 108/√1.3× 2.14)=(3× 108/1.67) =1.8× 108 m/s

Q. Electromagnetic waves travel in a medium which has relative permeability 1.3 and relative permittivity 2.14. Then the speed of the electromagnetic wave in the medium will be

$13.6 \times 10^{6} m / s$

$1.8 \times 10^{2} m / s$

$3.6 \times 10^{8} m / s$

$1.8 \times 10^{8} m / s$

The speed of electromagnetic wave in medium is $υ = \frac{c}{μ _{r} ε _{r}} = \frac{3 \times 10 ^{8}}{1.3 \times 2.14} = \frac{3 \times 10 ^{8}}{1.67}$ $= 1.8 \times 10^{8} m / s$

Q. Electromagnetic waves travel in a medium which has relative permeability 1.3 and relative permittivity 2.14. Then the speed of the electromagnetic wave in the medium will be

13.6×106m/s

1.8×102m/s

3.6×108m/s

1.8×108m/s

The speed of electromagnetic wave in medium is υ=μr​εr​​c​=1.3​×2.143×108​=1.673×108​ =1.8×108m/s

$13.6 \times 10^{6} m / s$

$1.8 \times 10^{2} m / s$

$3.6 \times 10^{8} m / s$

$1.8 \times 10^{8} m / s$

The speed of electromagnetic wave in medium is $υ = \frac{c}{μ _{r} ε _{r}} = \frac{3 \times 10 ^{8}}{1.3 \times 2.14} = \frac{3 \times 10 ^{8}}{1.67}$ $= 1.8 \times 10^{8} m / s$