An increase in the voltage applied to an X-ray tube causes an increase in the X-rays'
A) wavelength.
B) speed.
C) energy.
D) number.

Question

Quizplus · Accepted Answer

According to the equation E = hc/λ, where E is energy, h is Planck's constant, c is the speed of light, and λ is wavelength, an increase in voltage causes an increase in X-ray energy, while wavelength remains constant. Therefore, the correct choice is C.

An Increase in the Voltage Applied to an X-Ray Tube