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

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,λ_min,hν,and the maximum frequency,f_max,hν,at the higher voltage compare to those (λ_min,lv,f_max,lv) at the lower voltage?
Λ_min,hv/ λ_min,lv = ________,f_max,hv/ f_max,lv =________:

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