If an X-Ray Machine Were Designed to Operate at Two

question 65

Multiple Choice

If an x-ray machine were designed to operate at two separate accelerating voltages,one double the other,how would the shortest wavelength,ë_min,hv,and the maximum frequency,f_max,hv,at the higher voltage compare to those (ë_min,lv,f_max,lv) at the lower voltage? ë_min,hv/ ë_min,lv = ________,f_max,hv/ f_max,lv =________:

• A)2,2.
• B)2,1/2.
• C)1/2,2.
• D)1/2,1/2.

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