What is the frequency of radiation that has a wavelength of 12 um , about the size of a bacterium? Express in 2 sigfig.

Its like they want this converted from v to s-1. Not sure what the question is wanting me to do. Can you give me a break down detail on how to answer this?


If you could please help me solve this one as well. I have tried to solve but i don't know how to put it into where I need to in order to solve. Thank you again!


What is the wavelength of radiation that has a frequency of 5.70×1014 s-1 ? Express in 3 sigfig. and in nm.