Dual Nature Of Light Question 463
Question: Mosley’s law relates the frequencies of line X-rays with the following characteristics of the target element [CPMT 1980; NCERT 1985]
Options:
A) Its density
B) Its atomic weight
C) Its atomic number
D) Interplaner spacing of the atomic planes
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Answer:
Correct Answer: C
Solution:
$ \nu \propto {{(Z-b)}^{2}},\Rightarrow ,\nu =a,{{(Z-b)}^{2}} $ Z = atomic number of element (a, b are constant).