The target of an x-ray tube is a metallic element. The smallest wavelength produced in the continuous x-ray spectrum is 118 pm. The K α line of the characteristic x-ray spectrum is barely observed a

Question

The target of an x-ray tube is a metallic element. The smallest wavelength produced in the continuous x-ray spectrum is 118 pm. The $K_{α}$ line of the characteristic x-ray spectrum is barely observed at the same wavelength of 118 pm . The potential difference used to accelerate the electron beam is closest to:

Options:

Answer:

A

Solution:

$V = \frac{h c}{e λ _{min}} = \frac{12.4 \times 1 0 ^{- 7}}{118 \times 1 0 ^{- 12}}$ V

$V \approx 10.5 kV$

Answer (A)

TestHub · Accepted Answer

V = e λ min ​ h c ​ = 118 × 1 0 − 12 12.4 × 1 0 − 7 ​ V V ≈ 10.5 kV Answer (A)

Physics - Modern Physics Question with Solution | TestHub

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