1. If a periodic signal is decomposed into five sine waves with frequencies of 100, 300, 500, 700, and 900 Hz, what is its bandwidth? a) 2500 Hz b) 900 Hz c) 800 Hz d) can’t be determined with the information given AnswerAnswer: c [Reason:] The bandwidth is 900-100 = 800 Hz. 2. Assume we…