Draw a diagram to show refraction of a plane wave front incident in a convex lens and hence draw the refracted wave front

Explanation

To solve the problem of drawing the refraction of a plane wave front incident on a convex lens and subsequently drawing the refracted wave front, follow these steps:

### Step 1: Draw the Convex Lens
- Begin by sketching a convex lens. A convex lens is thicker in the center and thinner at the edges. Draw two curved lines that meet at the edges to form the lens shape.

### Step 2: Indicate the Incident Plane Wave Front
- Draw a series of parallel lines (representing the incident plane wave front) approaching the lens from the left side. These lines should be evenly spaced and perpendicular to the direction of the wave front, indicating that the wave front is planar.

...