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Consider a point at the focal point of a...

Consider a point at the focal point of a convex lens. Another convex lens of short focal length is placed on the other side. Then the nature of wavefront emerging from the final image.

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To solve the problem, we need to analyze the situation with two convex lenses and determine the nature of the wavefront emerging from the final image. Here’s a step-by-step breakdown of the solution: ### Step 1: Understand the Setup We have two convex lenses, L1 and L2. The first lens (L1) has its focal point at a certain distance from its optical center. We place a point source at this focal point. **Hint:** Identify the key components of the optical system, including the lenses and their focal points. ### Step 2: Analyze the First Lens (L1) ...
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