MHT CET2009PhysicsAtomic Physics
In a hydrogen atom, the electron is making 6.6 10¹⁵ revs ⁻¹ around the nucleus in an orbit of radius 0.528 ~A . The magnetic moment ( A - m ² ) will be
Options
- A1 10⁻¹⁵
- B1 10⁻¹⁰
- C1 10⁻²³
- D1 10⁻²⁷
Correct answer
C. 1 10⁻²³
Step-by-step solution
Current, I=6.6 10¹⁵ 1.6 10⁻¹⁹=10.5 10⁻⁴ ~A . Area A= R²=3.142 (0.528)² 10⁻²⁰ ~m ² So, Magnetic moment M=I A=10.5 10⁻⁴ 3.142 aligned (0.528)² 10⁻²⁰ & =& 10 10⁻²⁴=10⁻²³ units aligned