Electromagnetic Field Theory - Engineering

Q1:

A circular waveguide carries TE11 mode whose radial electric-field is given by
Er = E 0J1 (r) sin φ V/m
where 'r' is the radial distance in cm, from the waveguide axis. The cut-off wavelength of the mode is

A 10 cm

B
3p cm

C
2p cm

D 8 cm

ANS:C -

2p cm

.