ii. The human audible ranges from 20Hz - 20kHz. However, any sound below 250Hz is considered to be disturbingly low pitched and any sound above 4500Hz is considered to be disturbingly high pitched. Design the alarm timer circuit with a frequency of MS Hz and a duty cycle of N% [where M= C+0+V+I+D and N = 100 - MJ. However, if M5 Hz is not within soothing hearing limits, take frequency, f =400Hz. Choose the capacitor value from the given list based on the suitability of your requirements. (C = 50uF/250uF/470uF)