Physics-
General
Easy
Question
Given X-ray spectrum is for a Coolidge tube having accelerating potential V If accelerating potential is decreased to V/4, then 
becomes four times with change in anode element If Z is the atomic number of the original element, then the atomic number of new element is (neglect screening effect).
- Z
- Z/2
- 2Z
- Z/3
The correct answer is: Z/2
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