Convex Mirror & Virtual images

In summary, a concave mirror would be required to form an image 5 times as tall as an object on a screen 5.0m away. The mirror should be positioned between the object and the screen. According to the equations M = (Di)/(Do) and 1/(Di) + 1/(Do) = 1/(F), a real image can be produced with a convex mirror. However, it is not possible to project a virtual image onto a screen. To get a real image 5 times taller than the object, the object should be positioned between the mirror and the focal point.
  • #1
kmr159
7
0
1. A spherical mirror is used to form an image 5 times as tall as an object, on a screen positioned 5.0m from the mirror.
a) Describe the type of mirror required
b) Where should the mirror be positioned relative to the object




2. M = (Di)/(Do) & 1/(Di) + 1/(Do) = 1/(F)



3. I have solved the problem ( assuming Di = -5) getting Do = 1. m & the mirror being a convex mirror. However how it possible for a virtual image to be projected onto a screen? Thanks
 
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  • #2
A virtual image cannot be projected onto a screen. Is there a way to get a real image 5 times taller than the object? (The problem does not say that the image must be upright. The image might be inverted.)
 
  • #3
kmr159 said:
3. I have solved the problem ( assuming Di = -5) getting Do = 1. m & the mirror being a convex mirror. However how it possible for a virtual image to be projected onto a screen? Thanks

It is not virtual. What type of shpherical mirror produces a real image? Between what two positions on the axis should the object be to get an enlarged real image?
 

Related to Convex Mirror & Virtual images

What is a convex mirror?

A convex mirror is a curved mirror in which the reflective surface bulges outwards. It is also known as a diverging mirror because it causes light rays to diverge or spread out.

How does a convex mirror create a virtual image?

A convex mirror creates a virtual image by reflecting light rays from an object in such a way that the rays appear to come from a point behind the mirror. This image is virtual because it cannot be projected onto a screen.

What are the characteristics of a virtual image formed by a convex mirror?

A virtual image formed by a convex mirror is always upright, smaller than the object, and located behind the mirror. It is also always virtual, meaning it cannot be projected onto a screen.

How does the size of a virtual image compare to the size of the object?

The size of a virtual image formed by a convex mirror is always smaller than the size of the object. This is because the light rays are diverging as they reflect off the curved surface of the mirror, causing the image to appear smaller.

Can a convex mirror form a real image?

No, a convex mirror cannot form a real image. The curved surface of the mirror causes light rays to diverge, making it impossible for them to converge and form a real image. Only concave mirrors can form real images.

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