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General
Easy
Question
A beam of electrons striking a copper target produces X-rays.Its spectrum is as shown Keeping the voltage same if the copper target is replaced with a different metal, the cut-off wavelength and characteristic lines of the new spectrum will change in comparision with old as :
- Cut-off wavelength will remain unchanged while characteristic lines will be different.
- Both cut-off wavelength and characteristic lines will remain unchanged.
- Both cut-off wavelength and characteristic lines will be different.
- Cut-off wavelength will be different while characteristic lines will remain unchanged.
The correct answer is: Cut-off wavelength will remain unchanged while characteristic lines will be different.
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