Question

calculate the wave length of an electron moving with velocity of light

Answer 1

hey mate here is your answer.

Multiply the speed by theelectron mass to get the momentum and divide that by Planck's constant to get the inverse of the wavelength. ... So λ=h/(mv), where h is Planck's constant, m is the mass of anelectron, and v = 0.1c.

I hope this helps you
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