InterviewSolution
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InterviewSolution
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The intensity of X-rays form a Coolidge tube is plotted against wavelength `lambda` as shown in the figure. The minimum wavelength found is `lambda_c` and the wavelength of the `K_(alpha)` line is `lambda_k`. As the accelerating voltage is increased (a) `lambda_k - lambda_c` increases (b) `lambda_k - lambda_c` decreases (c ) `lambda_k` increases (d) `lambda_k` decreasesA. `lambda_(k) - lambda_(c)` increasesB. `lambda_(k) - lambda_(c)` decreasesC. `lambda_(k)` increasesD. `lambda_(k)` decreases |
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Answer» Correct Answer - A Wavelength `lambda_(k)` is independent of the acceleration voltage (V), while the minimum wavelength `lambda_(c)` is inversely proportional to V. therefore, as V is increased, `lambda_(k)` remains unchanged where as `lambda_(c)` decreases or `lambda_(R)-lambda_(c)` will increase. |
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