Careful with signs. For a convex mirror, what sign will the focal length have?kc262 said:
Doc Al said:
And because of this discrepancy, I am unsure of how to find the magnification.Then how did you get an image distance of +0.155 m ? (See Redbelly98's comment.)kc262 said:
Now I'm confused. Your first post seemed to indicate that you knew your answer was wrong.However the marking program marked my answer right. I was confused by this
You find it just as you stated in your first post:
But you need the correct image distance (correct in both magnitude and sign), of course.
A convex mirror is a curved mirror with a reflective surface that bulges outward. It is also known as a diverging mirror because it diverges light rays that strike its surface.
A convex mirror causes light rays to diverge, which means they spread out instead of coming together at a point. This creates a virtual image that is smaller than the object and upright.
A convex mirror and a concave mirror have opposite curvatures. A convex mirror bulges outwards, while a concave mirror curves inwards. Additionally, a convex mirror creates a virtual image, while a concave mirror can create both virtual and real images.
Magnification is the ratio of the height of an image to the height of the object. In convex mirrors, the magnification is always less than 1, which means the image is smaller than the object.
The magnification of a convex mirror can be calculated using the equation M = -v/u, where M is the magnification, v is the image distance, and u is the object distance. The negative sign indicates that the image is virtual and upright.