Q17.If an electron is moving in the nth orbit of the hydrogen atom, then its velocity (vn) for the nth orbit is given as: (1) vn ∝n (2) vn ∝1n (3) vn ∝n2 (4) vn ∝ n21
What This Question Tests
This question directly asks for the proportionality of the electron's velocity in the nth orbit of a hydrogen atom based on Bohr's model.
Concepts Tested
Formulas Used
v_n = Z e² / (2ε₀ n h)
📚 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.
12.7 — The Radius Of The Innermost Electron Orbit Of A Hydrogen Atom Is
Physics Class 12 · Chapter 12
12.7 The radius of the innermost electron orbit of a hydrogen atom is 5.3×10–11 m. What are the radii of the n = 2 and n =3 orbits?
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.
📋 Question Details
- Chapter
- Atoms
- Topic
- Bohr model of hydrogen atom (velocity)
- Year
- 2021
- Shift
- 17 Mar Shift 1
- Q Number
- Q17
- Type
- MCQ
- NCERT Ref
- Class 12 Physics Ch 12: Atoms
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