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Q.

Given : The mass of electron is 9.11x 10-31kg ,
Planck constant is 6.626x 10-34 Js , the uncertainty involved in the measurement of velocity within a distance of 0.1A0 is

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a

5.79×107ms−1

b

5.79×108ms−1

c

5.79×106ms−1

d

5.79×105ms−1

answer is C.

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Detailed Solution

Δx⋅mΔv=h4π
0.1×10−10×9.11×10−31×Δv=6.626×10−344×3.14
Δv=6.626×10−340.1×10−10×9.11×10−31×4×3.14
=5.79×106m

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