SUBJECT: Radio Aids
Question No. 1

Secondary radars require:

[ Total Que.:6 ]
a target which will respond to the interrogation, and this target will always be an aircraft.
a target which will respond to the interrogation, and this target will always be ground based.
a target which will respond to the interrogation, and this target may be either an aircraft or a ground based transponder.
a quiescent target.
Explaination: As explained earlier