Modern Physics 4 Question 16
16. The intensity of -rays from a coolidge tube is plotted against wavelength as shown in the figure. The minimum wavelength found is and the wavelength of the line is . As the accelerating voltage is increased
(a)
(b)
(c)
(d)
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Solution:
- Wavelength
is independent of the accelerating voltage (V), while the minimum wavelength is inversely proportional to . Therefore, as is increased, remains unchanged whereas decreases or will increase.