Q12.The magnetic moment of an electron ๐ revolving in an orbit around nucleus with an orbital angular momentum is given by ๐๐ฟ ๐๐ฟ - (1) โ๐๐ฟ= 2 ๐ (2) โ๐๐ฟ= 2 ๐ (3) ๐ โ๐ฟ (4) 2๐ โ๐ฟ - โ๐๐ฟ= ๐ โ๐๐ฟ= ๐
What This Question Tests
This question is a direct recall of the formula relating the magnetic moment of an electron to its orbital angular momentum, a fundamental concept in magnetism.
Concepts Tested
Formulas Used
ฮผ_L = (e/2m)L
๐ NCERT Sections This Tests
12.6 โ (A) Using The BohrโS Model Calculate The Speed Of The Electron In A
Physics Class 12 ยท Chapter 12
12.6 (a) Using the Bohrโs 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 โ The Radius Of The Innermost Electron Orbit Of A Hydrogen Atom Is
Physics Class 12 ยท Chapter 12
12.7 The radius of the innermost electron orbit of a hydrogen atom is 5.3ร10โ11 m. What are the radii of the n = 2 and n =3 orbits?
4.12 โ In Exercise 4.11 Obtain The Frequency Of Revolution Of The Electron In
Physics Class 11 ยท Chapter 4
4.12 In Exercise 4.11 obtain the frequency of revolution of the electron in its circular orbit. Does the answer depend on the speed of the electron? Explain.
๐ Question Details
- Chapter
- Magnetic Effects of Current
- Topic
- Magnetic Dipole Moment of Revolving Electron
- Year
- 2022
- Shift
- 25 Jul Shift 1
- Q Number
- Q12
- Type
- Conceptual
- NCERT Ref
- Class 12 Physics Ch 4: Moving Charges and Magnetism
More from this Chapter
Q49.If a current is passed through a spring then the spring will (1) expand (2) compress (3) insulator (4) none of these
Q52.If in a circular coil A of radius R, current I is flowing and in another coil B of radius 2R a current 2l is flowing, then the ratio of the magnetic fields BA and BB , produced by them will be (1) 1 (2) 2 (3) 1/2 (4) 4
Q53.If an electron and a proton having same momenta enter perpendicular to a magnetic field, then (1) curved path of electron and proton will be same (2) they will move undeflected (ignoring the sense of revolution) (3) curved path of electron is more curved than that (4) path of proton is more curved of the proton
Q54.Wires 1 and 2 carrying currents i1 and i2 respectively are inclined at an angle ฮธ to each other. What is the force on a small element dl of wire 2 at a distance of r from wire 1 (as shown in the figure) due to the magnetic field of wire 1 ? ฮผ0 (1) ฮธ 2ฯr i1i2dl tan ฮธ (2) 2ฯrฮผ0 i1i2 dl sin (3) 2ฯr ฮผ0 i1i2dl cos ฮธ (4) 4ฯrฮผ0 i1i2dl sin ฮธ