A nerve pulse is a wave pulse that travels along a nerve, typically at a speed of `50 m//s`. If the pulse sweeps past one point in the nerve from t = 0 to t = 2 ms, during what time interval will it pass a point in the nerve `1 m` away ?

Explanation

Time taken by the nerve pulse to travel a distance of `1 m = (1 m)/(50 m//s) = 0.02 s = 20 ms`
Thus, time interval during which the nerve impulse will pass a point in the nerve `1 m` away `= (0 + 20) ms and (2 + 20) ms` i.e., t = 20 ms to t = 22 ms.