Question

The variation of density of the medium for two sound waves is shown in Fig. (a) and (b). Label compression and rarefaction by C and R on it. In the graph given in Fig. (c) and (d), label the axes and draw the curves corresponding to Fig. (a) and (b).

Answer 1

• Fig. (a) and (b): Label the regions of high density as C (Compression) and low density as R (Rarefaction).
• Fig. (c) and (d): Draw the corresponding density–distance graphs.

• • X-axis: Distance
  • Y-axis: Density
  • Crests: Compressions (C)
  • Troughs: Rarefactions (R)
  • Dashed horizontal line: Average density