1.

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

Answer» Correct Answer - D
(d) `Delta x = Delta p` :. `Delta x. Delta p = (h)/(4 pi)`
or `Delta x = sqrt((h)/(4 pi))`
Now, `Delta x. Delta u = (h)/(4 pi m)`
:. `Delta u = (h)/(4 pi m) xx sqrt((4 pi)/(h)) = (1)/( 2m) xx sqrt((h)/(pi))`.


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