Question

The following data were obtained in a refraction survey.

Distance(m) 0 5 10 15 20 25 30 35 40 45 50 55 60

Time(msecs) 11 22 32 37 38 41 42 41 41 42 42 43 44

(i) Plot the time-distance graph and

(ii) Calculate the depth to the refractor below the shot point.

Answer 1

$d=40~m.$