Depict the behaviour of magnetic field lines near(i) diamagnetic and (ii) paramagnetic substances. Justify, giving reasons.

Explanation

To depict the behavior of magnetic field lines near diamagnetic and paramagnetic substances, we can follow these steps:

### Step 1: Understanding Diamagnetic Substances
- **Definition**: Diamagnetic substances are materials that create an opposing magnetic field when exposed to an external magnetic field. They have no unpaired electrons and exhibit a very weak repulsion to magnetic fields.
- **Behavior of Magnetic Field Lines**: When a diamagnetic substance is placed in an external magnetic field (B₀), the magnetic field lines are pushed away from the material. This results in a decrease in the magnetic field strength within the diamagnetic material.

### Step 2: Depicting Magnetic Field Lines for Diamagnetic Substances
- **Diagram**: Draw a set of magnetic field lines approaching a diamagnetic material. As the lines reach the material, they should curve away, indicating that the field lines do not pass through the material.
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