Question

What is the wavelength (in nm) of light with a frequency of- ^^ see picture

Answer 1

Frequency =6.75×10^14s^{-1}

$\\ \sf\longmapsto \lambda=\dfrac{c}{v}$

$\\ \sf\longmapsto \lambda=\dfrac{3\times 10^8m/s}{6.75\times 10^{14}s^{-1}}$

$\\ \sf\longmapsto \lambda=0.444\times 10^{-6}m$

$\\ \sf\longmapsto \lambda=0.4\mu m$

Answer 2

i think this is the answer 750 nm - 400 nm