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Q.

The uncertainty in the position of an electron (mass 9.1 × 10–28g) moving with a velocity of 3.0 × 104cm–1 accurate up to 0.011%, will be

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a

1.92cm

b

7.68cm

c

0.175cm

d

3.84 cm

answer is C.

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Detailed Solution

Δx=h4πm×1ΔV∆V=3×104×0.011×1100=3.3Δx=6.625×10-27erg·sec4×3.14×9.1×10-28×13.3= 0.175 cm
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