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Two different electron beams are incident on two different targets and both produce x rays. The cutoff wavelength for target 1 is shorter than the cutoff wavelength for target 2. We can conclude that: A. target 2 has a higher atomic number than target 1 B. target 2 has a lower atomic number than target 1 C. the electrons in beam 1 have greater kinetic energy than those in beam 2 D. the electrons in beam 1 have less kinetic energy than those in beam 2 E. target 1 is thicker than target 2 |
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Answer» C. the electrons in beam 1 have greater kinetic energy than those in beam 2 |
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