A) The amplitude of oscillating magnetic field will be \[18\times {{10}^{-7}}\text{Wb}\,{{\text{m}}^{-2}}\].
B) The amplitude of oscillating magnetic field will be \[18\times {{10}^{-8}}\text{Wb}\,{{\text{m}}^{-2}}\].
C) The wavelength of electromagnetic wave is 1.5 m.
D) The wavelength of electromagnetic wave is 1.5 cm.
Correct Answer: D
Solution :
[d]: \[{{B}_{0}}=\frac{{{E}_{0}}}{c}=\frac{54}{3\times {{10}^{8}}}=18\times {{10}^{-8}}T\] \[\lambda =\frac{c}{\upsilon }=\frac{3\times {{10}^{8}}}{2\times {{10}^{10}}}=1.5\times {{10}^{-2}}m=1.5cm\]
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