Electromagnetic Field Theory
Radiation intensity in a given direction is the

None of these
Power radiated per unit solid angle in that direction
Power radiated per square metre
Energy radiated per square metre

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Electromagnetic Field Theory
A rectangular waveguide is a

Tube antenna to transmit and receive electromagnetic waves
Hollow rectangular walled room carrying electromagnetic wave
Hollow rectangular conducting tube through which electromagnetic waves can be propagat-ed
Rectangular conducting wire to propagate electromagnetic waves

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