Question

when two waves interact completely constructively, what is true of the resultant wave? a. it has a larger amplitude. b. it has a smaller amplitude. c. it has a shorter wavelength. d. it has a longer wavelength.

Explanation:

In constructive interference, the amplitudes of the two - interacting waves add up. So the resultant wave has a larger amplitude. Wavelength is not affected by constructive interference as it depends on the source and medium.

Answer:

A. It has a larger amplitude.