If the kinetic energy of an electron is 100..

Question 1 Report

If the kinetic energy of an electron is 100 eV, what is the wavelength of the de-Broglie wave associated with it? [h = 6.6 x 10 $^{- 34}$ J s, e = 1.6 x 10 $^{19}$ C, m $_{e}$ , = 9.1 x 10 $^{- 31}$ kg]

1.22 x 10

^{- 10}

4.10 x 10

^{- 10}

3.90 x 10

^{- 10}

5.50 x 10

^{- 14}

Answer Details

de broglie wavelength formula in terms of kinetic energy:

λ = $\frac{h}{\sqrt{2 m E}}$

λ = $\frac{6.6 * 10^{- 34}}{\sqrt{2 * 9.1 * 10^{- 31} * 100}}$

λ = 5.50 x 10 $^{- 14}$ m

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Thermal Expansion

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If the kinetic energy of an electron is 100 eV, what is the wavelength of the de-Broglie wave associated with it? [h = 6.6 x 10−34 − 34 J s, e = 1.6 x 1019 ...