Key Idea : Δx×Δp≥4πh where, Δp= uncertainty in momentum and Δv= uncertainty in velocity Here, Δp=1×10−18 g cm s−1 mΔy=9×10−28 g=mΔp=9×10−281×10−18=1.1×109≈1.0×109 cm s−1
NEET UG 2008 — Chemistry Physical Chemistry
The measurement of the electron position is associated with an uncertainty in momentum, which is equal to 1×10−18 g cm s−1. The uncertainty in electron velocity is, (mass of an electron is 9×10−28 g )
Held on 30 Apr 2008 · Verified 9 Jul 2026.
1×109 cm s−1
1×106 cm s−1
1×105 cm s−1
1×1011 cm s−1
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