---
title: "A slide projector uses a single thin converging lens to project a clear, focused image of a slide onto a screen located $10.2\\text{ m}$ from the lens. The image on the screen is $50$ times larger than the image on the slide. Which of the following correctly pairs the focal length of the projector lens and the orientation of the image on the screen relative to the slide?"
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url: "https://nerd-notes.com/ubq/116915/"
date_modified: "2026-08-04T06:10:04+00:00"
---

# A slide projector uses a single thin converging lens to project a clear, focused image of a slide onto a screen located $10.2\text{ m}$ from the lens. The image on the screen is $50$ times larger than the image on the slide. Which of the following correctly pairs the focal length of the projector lens and the orientation of the image on the screen relative to the slide?

A slide projector uses a single thin converging lens to project a clear, focused image of a slide onto a screen located $10.2\text{ m}$ from the lens. The image on the screen is $50$ times larger than the image on the slide. Which of the following correctly pairs the focal length of the projector lens and the orientation of the image on the screen relative to the slide?

![A horizontal dashed line represents the principal axis. At the center, a vertical line segment with outward-pointing arrowheads at both top and bottom represents a thin converging lens. To the left of the lens, a short vertical arrow labeled Slide sits on the principal axis. To the right of the lens, a thick vertical line represents a Screen. A double-headed horizontal arrow below the principal axis marks the distance between the lens and the screen as 10.2 m. No rays, focal points, or image arrows are drawn. No other labels or lines appear.](https://nerd-notes.com/wp-content/uploads/ubq-frq-generated/stem-fig-1-1785823804-EkXt4x.jpg)

- **A.** Focal length: $0.20\text{ m}$ | Orientation: Inverted
- **B.** Focal length: $0.20\text{ m}$ | Orientation: Upright
- **C.** Focal length: $0.204\text{ m}$ | Orientation: Inverted
- **D.** Focal length: $0.204\text{ m}$ | Orientation: Upright

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/116915/*