Question

An electron in an atom jumps in such a way that its kinetic energy changes from $x$ to $\frac{x}{4},$ the change in potential energy will be

• A. $+\frac{3}{2}x$
• B. $-\frac{3}{8}x$
• C. $+\frac{3}{4}x$
• D. $-\frac{3}{4}x$

Answer 1

Answer: (A)

$\Delta PE=-\frac{2x}{4}-(-2x)=\frac{3}{2}x$