The sensor that receive sound echoes without transmitting their own sound signals is called A : Active Sonar B : Passive Sonar C : Radar D : Laser Rangefinder

The sensor that receive sound echoes without transmitting their own
sound signals is called
A : Active Sonar
B : Passive Sonar
C : Radar
D : Laser Rangefinder
by

1 Answer

Answer :

B : Passive Sonar
by

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