An object inside of the focal point of a concave mirror produces an image that is...
upright, big, virtual
http://www.physics.mun.ca/%7Ejjerrett/mirror/InsideF_mirror.gif
An object inside the focal point of a concave mirror produces an image that is virtual, upright, and magnified. To understand why, let's first understand the basic properties of concave mirrors.
A concave mirror is a curved mirror with reflective surface on the inner side. It has a focal point, which is a point on the principal axis where parallel rays of light converge or appear to diverge from. The distance between the focal point and the mirror is known as the focal length.
When an object is placed inside the focal point of a concave mirror, the image formation follows certain rules:
1. Virtual: The image formed by the concave mirror is virtual, meaning it cannot be projected onto a screen or captured. It appears to be located behind the mirror in the same direction as the incident light rays. This is because the reflected rays do not actually intersect, but rather appear to diverge from a point behind the mirror.
2. Upright: The image formed is upright, meaning it has the same orientation as the object. This occurs as the incident light rays from the object are reflected and continue to diverge, but in a way that creates an image with the same orientation as the object.
3. Magnified: The image formed is magnified compared to the size of the object. This happens because the concave mirror converges the light rays, causing them to spread out after reflection. As a result, the image produced appears larger than the object itself.
To summarize, when an object is placed inside the focal point of a concave mirror, the resulting image is virtual (behind the mirror), upright, and magnified.