Determine uncertainty of velocity, Chemistry

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Uncertainty in position of a 0.25 g particle is 10-5  . Uncertainty of velocity  ( h = 6.6 x 10 -34 Js) is:

(1)  1.2 x 10 34      

(2)  2.1 x 10 -29 

(3)  1.6 x 10 -20  

(4) 1.7 x 10 -9

Ans:  2.1 x 10 -29

 


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