In the relativistic case, doubling the speed of an electron causes its wavelength to
A)double.
B)more than double.
C)halve.
D)decrease to less than one-half.
E)quadruple.

Question

Quizplus · Accepted Answer

In the relativistic case, as the speed of an electron approaches the speed of light, its relativistic mass increases, causing its wavelength to decrease more than proportionally. Thus, doubling the speed results in a wavelength decrease to less than one-half.

In the Relativistic Case, Doubling the Speed of an Electron