Which of the following is the practical applications of reflection of sound waves?

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Sonar

Echo

Both 1 and 2

None of these

answer is C.

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Detailed Solution

Concept- To address this challenge, you'll need to write two processes that use sound waves. Parking sensors, radar, radiography, sonar, and echo are just a few examples.
1. Sonar:
Through the use of sound propagation, SONAR helps ships and submarines navigate through oceans. Sonar can be used to look into the ocean's depths and all the different things that might be found there. Ultrasound imaging for medical purposes is another application. Barriers and submerged animals can also be tracked using this technique.
2. Echo:
The echo is a useful tool for measuring the separation between two objects. Since we'll be using the formula speed = distance x time, we'll need to figure out how to calculate time using the speed we already know. After that, we can determine the distance.
3. Parking sensor:
Parking sensor systems use ultrasonic proximity detectors mounted in the front and/or rear bumpers to calculate distances to nearby low-level objects. Each time a sound pulse is reflected back to the receiver, the sensors measure the amount of time it takes. Depending on the speed of the vehicle and the distance to the hazard, the device may alert the driver to the possibility of a collision using visual or audio signals. Normally, the location and proximity of the obstruction would be revealed by the driver's input. The warnings can be turned off in situations like stop-and-go traffic and are deactivated once the car reaches a certain speed.
4. Radar:
In order to locate, distance, direction, and speed of moving and fixed objects, such as aircraft, ships, satellites, missiles, automobiles, weather patterns, and terrain, radar is a tool that uses electromagnetic radiation, such as radio waves. Radio waves or microwave pulses are sent out by the radar dish or antenna and reflect off any nearby objects. A dish or antenna that is typically placed close to the transmitter receives a tiny fraction of the wave energy that was reflected by the object.
Hence, option 3 is the correct answer.

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