Radar
Sonar
Quasar
Pulsar
Answer is Right!
Answer is Wrong!
The correct answer is B. Sonar.
Sonar is a technique that uses sound waves to measure distances underwater. It works
by emitting a sound wave and then listening for the echo that bounces back from an object. The time it takes for the sound wave to travel to the object and back is used to calculate the distance to the object.Radar is a technique that uses radio waves to measure distances. It works by emitting a radio wave and then listening for the echo that bounces back from an object. The time it takes for the radio wave to travel to the object and back is used to calculate the distance to the object.
Quasars and pulsars are types of astronomical objects. Quasars are extremely bright objects that are powered by supermassive black holes. Pulsars are rapidly rotating neutron stars that emit beams of radiation.
Neither radar nor quasars or pulsars can be used to locate submerged objects.