The image shows a straw in a glass of water.

Which wave interaction BEST explains the distorted appearance of the straw in the image?

a
refraction
b
diffraction
c
reflection
d
interference

1 answer

a. refraction

Refraction occurs when light waves (or in this case, water waves) change speed and direction as they pass from one medium to another, causing distortion in the appearance of objects. In this case, the water inside the glass is causing the light waves to refract, making the straw appear distorted.