1.

The filters F1 and F2 having characteristics as shown in Figures (a) and (b) are connected as shown in Figure (c).The cut-off frequencies of F1 and F2 are \({f_1}\) and \({f_2}\) respectively. If \({f_1}\; < \;{f_2}\)­, the resultant circuit exhibits the characteristics of a

A. Band-pass filter
B. Band-stop filter
C. All pass filter
D. High-Q-filter
Answer» C. All pass filter


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