Question

When a wave enters a new medium from an angle, both the speed and the ________ change

a
The frequency
b
The amplitude
c
The energy
d
The angle

Answer 1

B: Amplitude

Step-by-step explanation:

When a wave travels from one medium to the other from an angle, the things that change are amplitude, wavelength, intensity and velocity.

The frequency doesn't change because the frequency depends upon the source of the wave and not the medium by which the wave is propagated.