I'm really confused on how to do this, Can someone help walk me through?
An object is placed in front of a concave mirror as shown in the diagram below.
A. Draw at least two rays that demonstrate how this mirror produces an image. (4 points)
Image
B. Describe the image formed and justify your choices.
i. Is it real or virtual? (2 points)
ii. Is it upright or inverted? (2 points)
iii. Is it larger or smaller than the original object? (2 points)
https://www.google.com/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&cad=rja&uact=8&ved=0ahUKEwiiy73RovfQAhUUV2MKHZlwDbMQjRwIBw&url=http%3A%2F%2Fwww.physicsclassroom.com%2Fclass%2Frefln%2FLesson-3%2FRay-Diagrams-Concave-Mirrors&psig=AFQjCNFNBiiuW3nzsqKriBzSIPDM6NjjJw&ust=1481928112703411
I still don't understand :( Can you walk through it with me?
Sure! Let's go step by step to understand how to answer these questions about the image formed by a concave mirror.
A. To draw at least two rays that demonstrate how this mirror produces an image, we can use the following guidelines:
1. Ray parallel to the principal axis: Draw a ray from the top of the object, parallel to the principal axis, towards the mirror. After reflection, this ray will pass through the focal point (F) of the concave mirror.
2. Ray passing through the focal point: Draw a ray from the top of the object, passing through the focal point (F) of the mirror. This ray will be reflected parallel to the principal axis.
By extending these two reflected rays behind the mirror, you can determine where they intersect. This intersection point will be the location of the image.
B. Now let's answer the questions about the image formed:
i. Is the image real or virtual?
To determine if the image is real or virtual, you need to observe the intersection point of the extended refracted rays. If the rays intersect in front of the mirror, the image is virtual. If they intersect behind the mirror, the image is real. In the case of a concave mirror, the image is real and forms on the same side as the object.
ii. Is the image upright or inverted?
To determine if the image is upright or inverted, you need to look at the orientation of the object in relation to the image. If the top of the object is pointing upwards and the top of the image is also pointing upwards, then the image is upright. If the top of the object is pointing upwards and the top of the image is pointing downwards, then the image is inverted. In the case of a concave mirror, the image is inverted.
iii. Is the image larger or smaller than the original object?
To determine if the image is larger or smaller than the object, compare their sizes. If the image is larger than the object, the magnification is greater than 1, and the image is magnified. If the image is smaller than the object, the magnification is less than 1, and the image is minified. In the case of a concave mirror, it depends on the position of the object. If the object is located beyond the focal point (F), the image is smaller. If the object is located between the focal point (F) and the mirror, the image is larger.