Question

Some plane water waves were produced in a ripple tank. They pass from a region of deep water into a region of shallow water. Figure 15.0 shows what the waves look like from above.

State what happens at the boundary to

1. the frequency of the waves 
2. the speed of the waves
3. the wavelength of the waves
4. The waves have a speed of 0.12ms^-1 in the deep water wave crests are 0.08m apart in deep water. Calculate the frequency of the source producing the waves. 

Answer 1

1. Frequency not affected
2. Speed reduces
3. Wavelength reduces
4. V = fλ → f = v/λ = 0.12/0.08 = 1.5Hz