A non-relativistic free electron has kinetic energy K.If its wavelength doubles, its kinetic energy is:

Question

Quizplus · Accepted Answer

The kinetic energy (K) of a non-relativistic electron is inversely proportional to the square of its wavelength ($\lambda$). When the wavelength doubles ($\lambda \rightarrow 2\lambda$), the kinetic energy becomes one-fourth of its original value ($K \rightarrow K/4$). This is derived from the de Broglie relation $K \propto 1/\lambda^2$.

A Non-Relativistic Free Electron Has Kinetic Energy K