The peaks represent characteristic xrays. Their appearance depends on the target material. KB 30 40 50 60 70 80 л (pm) 90 The continuous curve represents bremsstrahlung. The shortest wavelength depends on the accelerating voltage. Figure 41.22 The x-ray spec- trum of a metal target. The data shown were obtained when 37-keV electrons bombarded a molybde- num target. Intensity

Question

In x-ray production, electrons are accelerated through a high voltage and then decelerated by striking a target. (a) To make possible the production of x-rays of wavelength λ, what is the minimum potential difference ΔV through which the electrons must be accelerated? (b) State in words how the required potential difference depends on the wavelength. (c) Explain whether your result predicts the correct minimum wavelength as shown. (d) Does the relationship from part (a) apply to other kinds of electromagnetic radiation besides x-rays? (e) What does the potential difference approach as λ goes to zero? (f) What does the potential difference approach as λ increases without limit?

The peaks represent characteristic
xrays. Their appearance depends
on the target material.
KB
30 40 50 60 70 80
л (pm)
90
The continuous curve represents
bremsstrahlung. The shortest
wavelength depends on the
accelerating voltage.
Figure 41.22 The x-ray spec-
trum of a metal target. The data
shown were obtained when 37-keV
electrons bombarded a molybde-
num target.
Intensity
View transcribed image text
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Transcribed Image Text

The peaks represent characteristic xrays. Their appearance depends on the target material. KB 30 40 50 60 70 80 л (pm) 90 The continuous curve represents bremsstrahlung. The shortest wavelength depends on the accelerating voltage. Figure 41.22 The x-ray spec- trum of a metal target. The data shown were obtained when 37-keV electrons bombarded a molybde- num target. Intensity