An electron is allowed to move freely in a closed cubic box of length of side 10 cm. The uncertainty in its velocity will be :

Options

A. a. `3.35xx10^(-4) m "sec"^(-1)`
B. b. `5.8xx10^(-4) m "sec"^(-1)`
C. c. `4xx10^(-5) m "sec"^(-1)`
D. d. `4 xx10^(-6) m "sec"^(-1)`

Answer

A

Explanation

`Delta x . ""m Delta v ge h/(4pi)`