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Calculate the wave length of an electron...

Calculate the wave length of an electron moving with a velocity of `2.05xx10^(7)ms^(-1)`.

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Mass of electron, `m=9.1xx10^(-31)kg,` v = velocity of electron `=2.05xx10^(7)ms^(-1)`,
h = Plancks constant `=6.6256xx10^(-34)Js`
According to de Broglie equation `lambda=(h)/(mv)=(6.6256xx10^(-34)kgm^(2)s^(-1))/(9.1xx10^(-31)kgxx2.05xx10^(7)ms^(-1))=3.55xx10^(-11)m`
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