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Calculate the de Broglie wavelength of an electron moving with 1 % of the speed of light?

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According to de Brogue equation, A = h/mv

Mass of electron = 9.1 x 10-31 kg; Planck’s constant 6.626 x 10-34 kg m2 s-1 

Velocity of electron = 1% of speed of light 

= 3.0 x 108 x 0.01 = 3 x 106 ms-1

Wavelength of electron (λ) = h/mv

= 2.43 x 10-10 m

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