Here are some audio examples of the different types of cadences:
Perfect Cadence: I-ii-V-I (Key of C: C Dm G C)
Plagal Cadence: I-ii-IV-I (Key of C: C Dm F C)
Imperfect Cadence: I-ii-IV-V (Key of C: C Dm F G)
Interrupted Cadence: I-ii-V-IV (Key of C: C Dm G F)
My content is under the Creative Commons Attribution 3.0 license. I work hard to publish relevant and useful information in order to help people learn difficult things and find solutions to their problems, so please attribute me if you reuse my content elsewhere.