Question

If uncertainty in position and momentum are equal then uncertainty in velocity is.
A. `sqrt((h)/(pi))`
B. `sqrt(h)/(2pi)`
C. `(1)/(2m)sqrt((h)/(pi))`
D. `(1)/(m)sqrt((h)/(pi))`.

Answer 1

Correct Answer - C
`Deltax*Deltap ge (h)/(4pi)`
`Deltap ge sqrt((h)/(4pi))` . . . When `Deltax=Deltap`
`mDeltavgesqrt((h)/(4pi))` ltbgt `Deltavge(1)/(2m)sqrt((h)/(2pi))`