Which wave property changes when two waves interfere in the same medium?
a) amplitude

b) frequency

c) wavelength

d) velocity

Answer : (A) amplitude

Explanation :

When two waves interfere in the same medium, then the amplitude of the resultant wave changes.

There are two conditions for interference :

(1) Constructive interference occurs when two waves are moving in the same direction. As a result, the amplitude gets larger.

(2) Destructive interference occurs when two waves are moving in opposite direction. As a result, both waves cancel out each other.

Hence, the correct option is (A).

c)as speed changes, wavelength and frequency change.

everything changes!

it would be kevlar ^^