What is the wavelength of violet light with a frequency of #750*10^12# #Hz#?

1 Answer
Mar 30, 2016

I found #400nm#

Explanation:

You can use the relationship between frequency, #nu#, wavelength, #lambda# and speed of light (in vacuum), #c#, given as:
#c=lambda*nu#
rearranging:
#lambda=c/nu=(3xx10^8)/(750xx10^12)=0.004xx10^(8-12)=0.004xx10^(-4)=4xx10^(-7)m=400nm#