Question

The magnetic field in a plane electromagnetic wave is : )105.1105.0sin(1021137txBy×+××=−Tesla. What is the wavelength and frequency of the wave ?

Answer 1

Comparing the given equation with By=Bosin[2π(xλ+tT)]

We get, λ=2π0.5×103m=1.26cm

and 1T =Frequency=1.5×10112π=23.9GHz

Ans : (b)