Question

In 0.8m there are 40 waves and observer`s ear perceives 180 waves in a minute. calculate the speed of the wave ( in cms-¹) *

Answer 1

Explanation:

* 180 waves per minute

180 waves per 60 seconds

3 waves per second

* 40 waves in 0.8m

40 waves in 80cm

0.5waves in 1cm

* 3waves / s

V. = -------------------

0.5waves / cm

V = 6 cm/s

*HOPE IT HELPS YOU*