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The uncertainty in the position of a moving bullet of mass 10 gm is 10 -5m . Calculate the uncertainty in its velocity:
(1) 5.2 x 10-28 / sec
(2) 3.0x 10 -28m /sec
(3) 5.2 x 10 -22m /sec
(4) 3x 10 -22m /sec
Ans: 5.2 x 10-28 / sec
The energy required to dislodge electron from excited isolated H-atom, IE 1 = 13.6 eV is: (1) = 13.6eV (2) > 13.6eV (3) 3.4 eV
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de-Broglie equation is: (1) n γ= 2d sin θ (2) E= hv (3) E= mc 2 (4) γ= h/ mv Ans: γ= h/ mv
#IONISATION ENERGY OF ELEMENTS..
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