In the production of X-rays by a Coolidge tube, the changes which can be made in its operation are listed in column I. The possible effects of such changes are listed in column-II COLUMN-I COLUMN-IIA) Change in the current flowing through P) Harder or softer X-rays areThe filament (emitter of cathode) produced B) Change in the potential difference applied Q) wavelengths of the Across the tube characteristic X-rays change C) Change in the metal used as the target R) Intensity of the X-rays change D) Rotating the tube from a horizontal S) cut of wavelengths position to a vertical position changes
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