Question 25 of 159

When accelerated electrons are direct against an anticathode in an X-ray tube, the radiation obtained has a continuous spectrum with a wavelength minimum,

λmin = (124 x 10-6/V) m, where V is the voltage used for accelerating the electrons. Calculate λmin for V= 5 x 104 volts.

(A) 1.25 Å

(B) 0.75 Å

(C)0.25 Å

(D) 1.00 Å