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Which displacement sensor has the slowest response time among Optical type, Eddy current type, Ultrasonic type and Laser focus type?

Which displacement sensor has the slowest response time among Optical type, Eddy current type, Ultrasonic type and Laser focus type? Correct Answer Ultrasonic Type

Ultrasonic type displacement sensor has the slowest response time among all the above mentioned type sensors. It’s so because it uses ultrasonic sound waves for the measurement while Optical and Laser type uses light for the measurement which is much faster than the ultrasonic waves. Eddy current type sensors uses high frequency magnetic field which is also faster than the ultrasonic waves.

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