Question

A free particle with initial kinetic energy $E$ and de-broglie wavelength $\lambda$ enters a region in which it has potential energy $U$. What is the particle's new de-Broglie wavelength?

• A. $\lambda (1-U/E{)}^{-1/2}$
• B. $\lambda (1-U/E)$
• C. $\lambda (1-U/E{)}^{-1}$
• D. $\lambda (1-U/E{)}^{1/2}$

Answer 1

The correct option is A $\lambda (1-U/E{)}^{-1/2}$