A metal target with atomic number Z=46 is bombarded with a high energy electron beam. The emission of X-rays from the target is analyzed. The ratio r of the wavelengths of the K_ -line and the cut-off is found to be r=2. If the same electron beam bombards another metal target with Z=41, the value of

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A metal target with atomic number Z=46 is bombarded with a high energy electron beam. The emission of X-rays from the target is analyzed. The ratio r of the wavelengths of the K_ -line and the cut-off is found to be r=2. If the same electron beam bombards another metal target with Z=41, the value of r will be

Quantrex Academy · Accepted Answer

Correct answer: A. 2.53

$ aligned & 1 _ = 3 4 R(Z-1)^2 p \ & _ cut = h c e V \ & Ratio 1 (Z-1)^2 for same beam \ & Z x = 40^2 45^2 \ & x= 45^2 40^2 .2 2.53 aligned $

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