---
title: "A student is investigating the image-forming properties of a curved mirror. They place an illuminated object of height \\(h_0 = 2.0 \\text{ cm}\\) at a distance \\(d_o = 15 \\text{ cm}\\) in front of a concave mirror. The focal length of the concave mirror is \\(f = 30 \\text{ cm}\\)."
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url: "https://nerd-notes.com/ubq/117700/"
date_modified: "2026-08-04T07:53:28+00:00"
---

# A student is investigating the image-forming properties of a curved mirror. They place an illuminated object of height \(h_0 = 2.0 \text{ cm}\) at a distance \(d_o = 15 \text{ cm}\) in front of a concave mirror. The focal length of the concave mirror is \(f = 30 \text{ cm}\).

A student is investigating the image-forming properties of a curved mirror. They place an illuminated object of height \(h_0 = 2.0 \text{ cm}\) at a distance \(d_o = 15 \text{ cm}\) in front of a concave mirror. The focal length of the concave mirror is \(f = 30 \text{ cm}\).

**Part a)** **Draw** a ray diagram on the figure below to determine the location and size of the image. **Draw** at least two principal rays.

**Part b)** Based on your ray diagram, **indicate** the properties of the image formed by the concave mirror. Image Type: - [ ] Real - [ ] Virtual Orientation: - [ ] Upright - [ ] Inverted

**Part c)** **Calculate** the magnification of the image produced by the concave mirror.

**Part d)** The student replaces the concave mirror with a convex mirror that has a focal length of \(f = -30 \text{ cm}\). The object remains at the original distance of \(d_o = 15 \text{ cm}\). **Compare** the height of the new image formed by the convex mirror to the height of the original image formed by the concave mirror. **Justify** your answer using physical principles.


*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/117700/*