What is the frequency of a wave that is 4.21 x 10-7 m? c=𝜆𝜈

Answer 1

Using c = λν

c = speed of light = ~3x10⁸ m/sec

λ = wavelength = 4.21x10^-7 m

ν = frequency = ?

Solving for ν, we have...

ν = c/λ = 3x10⁸ m/sec ÷ 4.21x10^-7 m

ν = 7.13x10¹⁴ sec^-1 (7.13x10¹⁴ Hz)