JEE Main 2002 — Structure Of Atom Question with Solution
From: AIEEE 2002
Question
Uncertainty in position of a minute particle of mass 25 g in space is 10-5 m. What is the uncertainty in its velocity (in ms-1) (h = 6.6 10-34 Js)
Choose an option
Show full solutionCorrect option: C
Correct answer
C2.1 10-28
Step-by-step explanation
According to Hysenberg's Uncertainty Principal
$\Delta x . \Delta p \ge { h \over {4\pi}}$
Where is uncertainty in position and is uncertainty in momentum and as in momentum m (mass of object) is always same so we can say
$\Delta x . m. \Delta v \ge { h \over {4\pi}}$
Mass of the particle (m) = 25 g = 0.025 kg
Position of the particle () = 10-5 m
=
=
=
=
= 2.1 10-28
Position of the particle () = 10-5 m
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=
=
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= 2.1 10-28
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This is a previous-year question from JEE Main 2002, 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.