how to work LC low pass filter..

hi guys...i need to know how LC low pass filter works..is there anybody to explain how it works...thanks....

Well, capacitors and inductors impedances changes with frequency.

The higher the frequency, lower the capacitor impedance.
The higher the frequency, higher the inductor impedance.

So a low pass LC filter, is a LC network (a combination of inductors and capacitor) that are configured to output a lower voltage, the higher the input frequency is.