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1. |
What kV potential is to be applied on X-ray tube so that minimum wavelength of emitted X-rays may be 1Å (\[h=6.625\times {{10}^{-34}}\]J-sec) [UPSEAT 1999] |
A. | \[12.42\,kV\] |
B. | \[12.84kV\] |
C. | \[11.98kV\] |
D. | \[10.78kV\] |
Answer» B. \[12.84kV\] | |