Hi all. I have a question that I am stuck on - would REALLY appreciate some help!
When plane waves cross into a less dense medium, what changes occurs in (i) frequency, (ii) the speed and (iii) the wavelength?
i think the wavelength increases, the speed increases and the frequency stays the same - would that be correct?
If this is correct, can anyone please explain why this is?
Thanks so much, will leave rep!