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Electromagnetic Field Theory

Q1:

A medium of relative permittivity εr2 = 2 forms an interface with free space. A point source of EM energy is located in the medium at a depth of 1 meter from the interface. Due to the total internal reflection, the transmitted beam has a circular cross-section over the interface. The area of the beam cross section at the interface is given by

A
2p m2

B
p2 m2

C
m2

D
p m2

ANS:D -

p m2



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