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In an Xray tube containing tungsten target , 50kV voltage is applied. Calculate the minimum wavelength of xray emitted. If the target is replaced by molybdenum will the min. wavelength change. Justify your answer?
I used λ min= hc/eV= 2.481×10^ (-11) m for the 1st part.
For the 2nd part I am clueless. I infer from observing graphs given in textbooks that molybdenum should have higher λmin than tungsten. Z=74 for tungsten and Z=42 for molybdenum. But can't come up with a rigid justification.
Should i use
(λΤ/λ Μο)=( ΖΜο-1/ΖΤ-1)^2??
I used λ min= hc/eV= 2.481×10^ (-11) m for the 1st part.
For the 2nd part I am clueless. I infer from observing graphs given in textbooks that molybdenum should have higher λmin than tungsten. Z=74 for tungsten and Z=42 for molybdenum. But can't come up with a rigid justification.
Should i use
(λΤ/λ Μο)=( ΖΜο-1/ΖΤ-1)^2??