Question

fill in the blank question waves that have gone through a transitional phase and are now in a water depth range between l/2 and l/20 are called waves.

Explanation:

In oceanography, waves in the water - depth range between half of the wavelength ($L/2$) and one - twentieth of the wavelength ($L/20$) are known as intermediate waves. This is based on wave - theory classification related to water depth.

Answer:

intermediate