JEE Main 2009 — Structure Of Atom Question with Solution
From: AIEEE 2009
Question
In an atom, an electron is moving with a speed of 600 m/s with an accuracy of 0.005%. Certainity
with which the position of the electron can be located is (h = 6.6 10-34 kg m2s-1, mass of electron, em = 9.1 10-31 kg)
Choose an option
Show full solutionCorrect option: B
Correct answer
B1.92 10-3 m
Step-by-step explanation
% error in velocity =
0.005 =
V = 3 10-2
According to Heisenberg uncertainty principle,
= 1.92 10-3 m
0.005 =
V = 3 10-2
According to Heisenberg uncertainty principle,
= 1.92 10-3 m
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This is a previous-year question from JEE Main 2009, covering the Structure Of Atom chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.