1.

Calculate the ratio between the wavelength of an electron and a proton if the proton is moving with half the velocity of electron (mass of proton = 1.67 xx 10^(-27)kg and mass of electron = 9.11 xx 10^(-31) kg)

Answer»

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Solution :`lamda_(E) = (h)/(m_(e) v_(e)), lamda_(p) = (h)/(m_(p) v_(p)), (lamda_(e))/(lamda_(p)) = (m_(p) v_(p))/(m_(e) v_(e)) = (1)/(2) XX (1.67 xx 10^(-27) KG)/(9.11 xx 10^(-31) kg) = 916.6`


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