An electron in the ground state of hydrogen atom is revolving in anti-clock wise direction in a circular orbit. The atom is placed in a magnetic filed such that the normal to the electron orbit makes an angle of 30° with the magnetic field. Find the torque experienced by the orbiting electron.

Explanation

To find the torque experienced by the orbiting electron in a hydrogen atom placed in a magnetic field, we can follow these steps:

### Step 1: Understand the System
The electron is revolving in a circular orbit in an anti-clockwise direction. The angle between the normal to the orbit and the magnetic field is given as \(30^\circ\).

### Step 2: Identify the Torque Formula
The torque (\(\tau\)) experienced by a magnetic moment (\(M\)) in a magnetic field (\(B\)) is given by the formula:
\[
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