Undergrad Understanding RC Band Pass Filter Graphs

[Sheldon11]

I want to know about RC band pass filter ! more specifically details about the graph of voltage vs frequency..

how the curves goes up and why the curve goes down? I don't understand ...
please help me out

 

[sophiecentaur]

A "Pass Band" filter passes one band of frequencies. The graph you posted shows the features of all such filters. No response at low frequencies - an ideally flat response over its pass band - no response at higher frequencies. That is what "Pass Band Filter" means. It can be regarded as a high pass and a low pass filter, combined. They can be made with design which uses just Rs and Cs. https://www.electronics-tutorials.ws/filter/filter_4.html and then google using the terms in the title of your OP.