Draw a labelled ray diagram of a refracting telescope. Define its magnifying power and write the expression for it.
Write two important limitations of a refracting telescope over a reflecting type telescope.

Explanation

### Step-by-Step Solution

**Step 1: Draw the Ray Diagram of a Refracting Telescope**

1. **Objective Lens**: Start by drawing a large convex lens on the left side of your diagram. This is the objective lens (denote it as 'O').

2. **Eyepiece Lens**: Draw a smaller convex lens on the right side of the objective lens. This is the eyepiece lens (denote it as 'E').

...