While propagating, a sound wave is refracted. Finally, it returns to the transducer. The system processes the sound wave as if it has:

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Multiple Choice

While propagating, a sound wave is refracted. Finally, it returns to the transducer. The system processes the sound wave as if it has:

Explanation:
Refraction bends the ultrasound beam when it encounters interfaces with different sound speeds. Because of this bending, the actual path the sound takes from transducer to reflector and back is not a straight line, but a curved trajectory. When the echo returns, the system receives it as coming from along that curved path. So the processing aligns with the wave having traveled along a curved path and then returned, rather than a simple straight-line path.

Refraction bends the ultrasound beam when it encounters interfaces with different sound speeds. Because of this bending, the actual path the sound takes from transducer to reflector and back is not a straight line, but a curved trajectory. When the echo returns, the system receives it as coming from along that curved path. So the processing aligns with the wave having traveled along a curved path and then returned, rather than a simple straight-line path.

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