The image of a candle is formed by a convex lens on a screen. The lower half of the lens is painted black to make it completely opaque. Draw the ray diagram to show the image formation. How will this image be different from the one obtained when the lens is not painted black ?

Explanation

To solve the problem of how the image of a candle formed by a convex lens is affected when the lower half of the lens is painted black, we will follow these steps:

### Step 1: Understanding the Setup
We have a convex lens and a candle placed at a certain distance from the lens. The lower half of the lens is painted black, making it opaque. This means that light rays passing through the lower half of the lens will not contribute to the image formation.

### Step 2: Drawing the Ray Diagram
1. **Draw the Convex Lens**: Start by drawing a vertical line to represent the convex lens. Mark the optical center (O) and the focal points (F) on either side of the lens.
2. **Position the Candle**: Place the candle (the object) on one side of the lens. For this example, we can assume it is placed at a distance of 2F from the lens.
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