Question

Why energy level of hydrogen are independent of l and m?

Answer 1

Answer:

(B) Electric field due to line charge

Consider a long thin uniformly charged wire and we have to find the electric field intensity due to the wire at any point at perpandicular distance from the wire.

If the wire is very long and we are at point far away from both its ends then field lines outside the wire are radial and would lie on a plane perpandicular to the wire.

Answer 2

Explanation:

The Zeeman effect consists of atomic energy level splitting and, accordingly, the splitting of the spectral lines of a sample when an external magnetic field is imposed on a sample. If a multi-electron atom is placed in an external magnetic field, depending on the magnitude of the magnetic field induction B, two cases can occur. In the first case, the weak magnetic field is unable to tear out the Russell–Saunders coupling; this is the case of a weak magnetic field or anomalous Zeeman effect. In this particular case, Larmor precession definitely takes place, indeed all cones in Figure 7.25 are precession cones: the whole “construction” takes part in the precession around the direction of this field (z-axis) and mechanicvectors. In the second case, corresponding to a strong magnetic field, the Russell–Saunders coupling is thrown out, and the orbital and spin angular momentumsparticipate in precession independently (normal Zeeman effect).