Question
What speed must an electron have if its momentum is to be thesame as that of an X-ray photon with a wavelength of 0.25 $\mathrm{nm}$ ?
Step 1
We know that 1 nanometer is equal to $10^{-9}$ meters. Therefore, the wavelength $\lambda$ of the X-ray photon is $0.25 \times 10^{-9}$ meters. Show more…
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