Question

A fourth-order Butterworth lowpass filter is shown in Fig. below. The
filter is designed such that the cutoff frequency wc = 1 rad/s. Scale the
circuit for a cutoff frequency of 50 kHz using 10k resistors.
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Answer 1

Explanation:

got the opportunity of knowing the feelings and problems of the blind from a close angle. on your return from the trip you decide to write an article for the times of india on the problem of the blind and the government expected role in solving them. write the article in not more than 200 words