Question 106: EM waves

Question

A linearly polarized electromagnetic wave in vacuum is $$E = 3.1\cos \left[ {(1.8)z - (5.4 	imes {{10}^6})t} ight]\widehat iN/C$$is incident normally on a perfectly reflecting wall at z = a. Choose the correct option

Accepted Answer

Reflected wave will have direction opposite to incident wave.

Answer

The wavelength is 5.4 m

Answer

The frequency of electromagnetic wave is 54 $$	imes$$ 104 Hz.

Answer

The transmitted wave will be $$3.1\cos \left[ {(1.8)z - (5.4 	imes {{10}^6})t} ight]\widehat iN/C$$

Answer

The reflected wave will be $$3.1\cos \left[ {(1.8)z + (5.4 	imes {{10}^6})t} ight]\widehat iN/C$$

EM waves

A linearly polarized electromagnetic wave in vacuum is $E = 3.1\cos \left[ {(1.8)z - (5.4 \times {{10}^6})t} \right]\widehat iN/C$is incident normally on a perfectly reflecting wall at z = a. Choose the correct option

Choose the correct answer: