Question

The de-Broglie wavelength of the electron is 30A°. Calculate the phase velocity and group velocity of matter wave associated with electron.​

Answer 1

Answer:

v = 45.5nm

Explanation:

Given 1, wavelength = 30A

= 30 × 10 ^-10

λ = h/mv

mass of electron (m) = 9.1×10^-31

velocity of electron (v) = ?

Planck's Constant (h) = 6.626×10^-34

λ = h/mv

v =λm/h

v = 30 × 10 ^-10 × 9.1×10^-31/ 6.626×10^-34

v = 270.3 × 10^-41 + 34 / 6.626

v = 45.5 × 10^-7m

v = 45.5nm

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