A circular waveguide carries TE11 mode whole radial electric field is given by E

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Question
A circular waveguide carries TE₁₁ mode whole radial electric field is given by
E_r = E₀j₁(r) sin ? V/m
where r is radial distance in cm from the axis
The cut off wavelength is
Options
A. 10 cm
B. 3 p cm
C. 2 p cm
D. 8 cm

Correct Answer

10 cm

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