Modern Physics Ques 159
- X-rays are produced in an X-ray tube operating at a given accelerating voltage. The wavelength of the continuous $X$-rays has values from
$(1998,2 M)$
(a) 0 to $\infty$
(c) 0 to $\lambda _{\max }$ where $\lambda _{\max }<\infty$
(d) $\lambda _{\min }$ to $\lambda _{\text {max }}$ where $0<\lambda _{\min }<\lambda _{\max }<\infty$
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Answer:
Correct Answer: 159.(b)
Solution:
- The continuous $X$-ray spectrum is shown in figure.
All wavelengths $>\lambda _{\min }$ are found, where
$ \lambda _{\min }=\frac{12375}{V(\text { in volt })} \AA $
Here, $V$ is the applied voltage.
BETA
