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Chapter 31: Problem 6

Can a concave mirror make a reduced real image? A reduced virtual image? An enlarged real image? An enlarged virtual image? Specify conditions for each possible image.

Short Answer

Expert verified
A concave mirror can form a reduced real image when the object is located beyond its centre of curvature. However, it cannot form a reduced virtual image nor a real magnified image. A concave mirror can form a magnified virtual image when the object is placed between the mirror's pole and its focal point.

Step by step solution

01

Understand Image Formation in Concave Mirrors

Concave mirrors can produce both real and virtual images. Real images are formed when the light rays from the object actually meet after reflection. They are formed on the same side as the light source and can be projected on the screen. Virtual images are formed when the light rays from the object appear to meet after reflection. They are formed on the other side of the mirror and cannot be projected on the screen.
02

Real Reduced Image

An object positioned beyond the centre of curvature (C) of a concave mirror will form a reduced and real image between the focal point (F) and the centre of curvature (C). The image is upside down or inverted.
03

Virtual Reduced Image

A concave mirror cannot produce a reduced virtual image. The image formed by a concave mirror is either a real reduced image (as mentioned in the previous step) or a virtual magnified image.
04

Real Magnified Image

A concave mirror cannot produce a magnified real image. For real images, when the object moves from infinity to the mirror, the image gradually changes from highly reduced to same size at the centre of curvature, but never becomes magnified.
05

Virtual Magnified Image

A virtual magnified image is produced when the object is placed between the pole (P) and the focal point (F) of the concave mirror. The image is formed behind the mirror, upright, and larger than the object itself.

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Most popular questions from this chapter

How can you see a virtual image, when it's not "really there"?

Does a fish in a spherical bowl appear larger or smaller than it actually is?

A lightbulb is \(56 \mathrm{cm}\) from a convex lens. Its image appears on a screen \(31 \mathrm{cm}\) from the lens, on the other side. Find (a) the lens's focal length and (b) how much the image is enlarged or reduced.

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By what factor is the image magnified for an object 1.5 focal lengths from a converging lens? Is the image upright or inverted?
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