What is the frequency of an x-ray that has a wavelength of $1.5 \cdot 10^{- 10}$ $1.5*10^-10$ m?

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Answer 1 · 2018-08-09T05:52:11

The frequency is $= 2 \cdot 10^{18} H z$ $=2*10^18Hz$

Apply the equation

$Frequency \times Wavelength = Speed$ $"Frequency" xx " Wavelength "= " Speed"$

$f \times λ = c$ $fxx lambda=c$

The wavelength is $λ = 1.5 \cdot 10^{- 10} m$ $lambda=1.5*10^-10m$

The speed is $c = 3 \cdot 10^{8} m s^{- 1}$ $c=3*10^8ms^-1$

The frequency is

$f = \frac{c}{λ} = \frac{3 \cdot 10^{8}}{1.5 \cdot 10^{- 10}} = 2 \cdot 10^{18} H z$ $f=c/lambda=(3*10^8)/(1.5*10^-10)=2*10^18Hz$

What is the frequency of an x-ray that has a wavelength of 1.5⋅10−101.5*10^-10 m?