What is understood by lateral displacement? State two factors on which it depends.

Explanation

**Step-by-Step Solution:**

1. **Definition of Lateral Displacement:**
Lateral displacement refers to the phenomenon where a ray of light, when passing through a transparent medium (like a glass slab), is shifted from its original path. This shift occurs due to the change in speed of light as it enters and exits different media.

2. **Illustration of the Concept:**
When a ray of light (let's call it ray P) enters a rectangular glass slab, it bends at the interface due to refraction. As it exits the slab, it bends again. The distance between the original path of the ray and its new path after passing through the slab is known as the lateral displacement.

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