# In an atom, an electron is moving with a speed of 600 m/s with an accuracy of 0.005%. Certainty with which the position of the electron can be located is Option 1) Option 2) Option 3) Option 4)

u=600msec−1u=600msec−1

∴Δu=600×0.005100∴Δu=600×0.005100

⇒0.30msec−1⇒0.30msec−1

Now,Δx.m.Δu=h4πΔx.m.Δu=h4π

Δx=6.6×10−344×3.14×9.1×10−31×0.30Δx=6.6×10−344×3.14×9.1×10−31×0.30

⇒1.92×10−3m⇒1.92×10−3m

N

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