Q61.Uncertainty in the position of an electron (mass = 9.1 × 10−31 kg ) moving with a velocity 300 ms−1 , accurate upto 0.001%, will be JEE Main 2006 JEE Main Previous Year Paper (1) 19.2 × 10−2 m (2) 5.76 × 10−2 m (3) 1.92 × 10−2 m (4) 3.84 × 10−2 m (h = 6.63 × 10−34Js)
What This Question Tests
This question tests the application of Heisenberg's Uncertainty Principle, requiring prior calculation of the uncertainty in velocity from a given percentage accuracy before determining the uncertainty in position.
Concepts Tested
Formulas Used
Δx * mΔv ≥ h / 4π
Δv = (percentage accuracy/100) * v
📚 NCERT Sections This Tests
12.6 — (A) Using The Bohr’S Model Calculate The Speed Of The Electron In A
Physics Class 12 · Chapter 12
12.6 (a) Using the Bohr’s model calculate the speed of the electron in a hydrogen atom in the n = 1, 2, and 3 levels. (b) Calculate the orbital period in each of these levels.
12.5 — A Hydrogen Atom Initially In The Ground Level Absorbs A Photon,
Physics Class 12 · Chapter 12
12.5 A hydrogen atom initially in the ground level absorbs a photon, which excites it to the n = 4 level. Determine the wavelength and frequency of photon.
12.6 — (A) 2.18 × 106 M/S; 1.09 × 106 M/S; 7.27 × 105 M/S
Physics Class 12 · Chapter 12
12.6 (a) 2.18 × 106 m/s; 1.09 × 106 m/s; 7.27 × 105 m/s (b) 1.52 × 10–16 s; 1.22 × 10–15 s; 4.11 × 10–15 s.
📋 Question Details
- Chapter
- Atomic Structure
- Topic
- Heisenberg's Uncertainty Principle
- Year
- 2006
- Shift
- Unknown
- Q Number
- Q61
- Type
- MCQ
- NCERT Ref
- Class 11 Chemistry Ch 2: Atomic Structure
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