Effect of Change of Potential difference applied to an X-Ray tube

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1. Nov 24, 2016

Bloopy

I am a high school student, so I know only the basics of X-Rays.I simply know about continuous X-rays, cutoff wavelength and threshold wavelength. Now if I increase the potential applied to the X-ray tube, I am certain that the minimum wavelength of emitted radiation decreases. (I say this using λ=hc/eV, which is the Duane-Hunt law)

I am unsure about the intensity of emitted radiation. Does that change?

Last edited: Nov 24, 2016
2. Nov 24, 2016

Staff: Mentor

Is this a general question, or are you working with X-rays in the lab? X-ray safety is an important consideration when working with lab setups.

3. Nov 24, 2016

Bloopy

As I said, I am in high school. There is no practical use of X-Rays. It is just the theoretical part. Actually, my textbook had a multiple choice question saying

"If we increase potential difference applied to an X-Ray tube, what of the following things will happen with the emitted radiation?
A. Intensity increases
B. Intensity decreases
C. Wavelength increases
D. Wavelength decreases.

Now, as I mentioned in the Original Post itself, I used the Duane-Hunt Law to mark the answer as D, which is obviously correct. Out of curiosity I wanted to know what would happen with the intensity. Since I myself did not have much knowledge regarding the issue, I decided not to put it under the homework section and just as a general question of Quantum Physics.

4. Nov 24, 2016

Staff: Mentor

Do you have two threads about this? If so, I can merge them into one thread in the schoolwork forums. We do not allow cross-posting here, and we do not allow schoolwork posts ourtide of the schoolwork forums. Thanks.

5. Nov 24, 2016

Bloopy

No, I didn't create two threads. Just this one.