Answer:
[tex]\frac{T}{4}[/tex]
Explanation:
From the billow figure the wave required T time to complete the length [tex]\lambda[/tex]
Now from the figure it is clear that the length between the maximum crest and minimum crest is [tex]\frac{\lambda }{4}[/tex]
As the distance is decreases by 4 times so the time will alos decreases by 4 times
So the required time for a wave to reach from maximum crest to minimum crest is [tex]\frac{T}{4}[/tex]
