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Question

Measurements and Control Systems Question on Bode Plot

The Bode plot of a 2nd order low pass filter is shown in the figure below. What is the frequency at which the attenuation is 80 dB ?
2nd order low pass filter

A

10 kHz

B

10 MHz

C

100 kHz

D

100 MHz

Answer

100 kHz

Explanation

Solution

The correct option is (C) : 100 kHz.