The equation we need to use to solve this is: c=λν
c is the speed of light (2.998 x 10^8 m/s)
λ is the wavelength, which we're gonna solve for
ν is the frequency ( 2.4 x 10^14 Hz )
First, plug in the values we were given into the equation
2.998 x 10^8 m/s= (λ)(2.4 x 10^14 Hz)
Next, divide both sides of the equation by 2.4 x 10^14 Hz to solve for the wavelength (λ)
λ= 1.249166667 x 10^-6 m
Round to 2 significant figures
λ= 1.2 x 10^-6 m