First slide

X-rays

Question

If the minimum wavelength obtained in an X-ray tube is $2.5 x 10^{- 10}$ m, the operating potential of the tube will be

Easy

A

2 kV
B

3 kV
C

4 kV
D

5 kV

Solution

$λ_{\min} = \frac{12375}{V} \overset{o}{A} \Rightarrow V = \frac{12375}{2 .5} = 4950 V = 5 kV$

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