First slide

X-rays

Question

X-rays are produced by accelerating electrons by voltage V and let they strike a metal of atomic number Z. The highest frequency of X-rays produced is proportional to

Easy

A

V
B

Z
C

(Z-1)
D

${(Z - 1)}^{2}$

Solution

According to Mosley's law $v \propto (Z - b)^{2}$
For $K_{α}$ line, b = 1, and it has maximum frequency so $v_{max} \propto (Z - 1)^{2}$

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