Answer:
B.3 m/s
Step-by-step explanation:
We are given that
Wavelength deep water wave=30 m
Time period=T=10 s
We have to find the velocity of deep water wave.
We know that the frequency=


Velocity, V=

Substitute the values in the formula
Then, we get
Velocity of deep water wave=

Hence, the velocity of deep water wave=3 m/s
Option B is true.