how can waves like sound have different wavelengths with same frequency?(Wα1/frequency) For eg, in air vel=wav*freq which in solid is more. So, either frequency or wavelength should change. But, since frequency is source dependent, its only the wavelength that changes. My Doubt is that how can there be different wavelengths on same frequency in different media? (when Wα1/frequency)[considering a graph] Please Explain.... Thanks a bunch!