question_answer 59)

  Draw a curve showing density or pressure variations with respect to distance for a disturbance produced by sound. Mark the position of compression and rarefaction on this curve. Also define wavelengths and time period using this curve.

Answer:

  We have a curve showing density or pressure variations with respect to distance for a disturbance produced by sound. Wavelength can be defined as the distance between to successive compresion or rarefaction. It is denoted by. Time taken by the waves to complete one full cycle, so that its particles are in same phase is called time period. It is denoted by T.