Part A What is the wavelength of an electron of energy 25eV ? Express your answer…

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Question “Part A What is the wavelength of an electron of energy 25eV ? Express your answer…”

Answer

Answer 1

Answer 2

A – 50 nm

B- 6.9 nm

C-1.2 nm

Answer 3

Answer 4

wavelength = h/m*v

We can also write mv in sqrt(m/2)*K.e (convert K.e to J by multiplying 1.60×10-19).

mv = sqrt(9.11×10^-31/2*25ev*1.60×10^-19J/ev) =1.36*10^-24

wavelength = 6.63×10^-34/1.36*10^-24=0.4875nm

b) mv = sqrt(9.11×10^-31/2*180ev*1.60×10^-19J/ev) =3.4*10^-24

wavelength = 6.63×10^-34/3.4*10^-24=0.1967nm

c) mv = sqrt(9.11×10^-31/2*1000ev*1.60×10^-19J/ev) =.853*10^-24

wavelength = 6.63×10^-34/.853*10^-24=0.777nm

Answer 5

a)

The wavelength of an electron of energetic energy 25eV is.

here,

b)

The wavelength of an electron of electricity 180eV is.

c)

The energy wavelength of an electron is 1.0 keV.

Conclusion

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