---
title: "Two thin converging lenses, Lens 1 with focal length \\(f_1 = 10 \\text{ cm}\\) and Lens 2 with focal length \\(f_2 = 15 \\text{ cm}\\), are positioned along a common principal axis separated by a distance of \\(40 \\text{ cm}\\). An object is placed \\(15 \\text{ cm}\\) to the left of Lens 1. What is the distance of the final image from Lens 2, and is the final image real or virtual?"
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url: "https://nerd-notes.com/ubq/117408/"
date_modified: "2026-08-04T06:52:05+00:00"
---

# Two thin converging lenses, Lens 1 with focal length \(f_1 = 10 \text{ cm}\) and Lens 2 with focal length \(f_2 = 15 \text{ cm}\), are positioned along a common principal axis separated by a distance of \(40 \text{ cm}\). An object is placed \(15 \text{ cm}\) to the left of Lens 1. What is the distance of the final image from Lens 2, and is the final image real or virtual?

Two thin converging lenses, Lens 1 with focal length \(f_1 = 10 \text{ cm}\) and Lens 2 with focal length \(f_2 = 15 \text{ cm}\), are positioned along a common principal axis separated by a distance of \(40 \text{ cm}\). An object is placed \(15 \text{ cm}\) to the left of Lens 1. What is the distance of the final image from Lens 2, and is the final image real or virtual?

![A horizontal dashed line represents the principal axis. Two thin converging lenses are drawn as vertical line segments with outward-pointing double-arrow tips at top and bottom. The first lens, labeled Lens 1, is positioned along the axis with tick marks labeled F1 at a distance representing 10 cm on both sides. The second lens, labeled Lens 2, is positioned 40 cm to the right of Lens 1 along the axis, with tick marks labeled F2 at a distance representing 15 cm on both sides. An upright arrow labeled Object stands on the principal axis at a distance representing 15 cm to the left of Lens 1. No light rays, intermediate images, or final images appear.](https://nerd-notes.com/wp-content/uploads/ubq-frq-generated/stem-fig-1-1785826324-HnMVYl.jpg)

- **A.** Distance: \(24 \text{ cm}\) | Image Type: Real
- **B.** Distance: \(10 \text{ cm}\) | Image Type: Virtual
- **C.** Distance: \(30 \text{ cm}\) | Image Type: Real
- **D.** Distance: \(30 \text{ cm}\) | Image Type: Virtual

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/117408/*