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    Question

    Which change would directly cause the minimum

    wavelength in X-ray emission to decrease?
    A Increasing the accelerating potential Correct Answer Incorrect Answer
    B Increasing the filament current Correct Answer Incorrect Answer
    C Decreasing the pressure in the tube Correct Answer Incorrect Answer
    D Replacing the target metal with one of higher atomic number Correct Answer Incorrect Answer

    Solution

    The minimum wavelength in X-ray emission corresponds to the maximum energy of emitted X-rays, which depends directly on the kinetic energy of the incident electrons . This kinetic energy is determined by the accelerating potential (V) applied across the X-ray tube. The relation is: So, increasing the accelerating potential increases the maximum energy, thereby decreasing the minimum wavelength of emitted X-rays.

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