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When is the image said to be real or virtual image?
An image is called real if the light rays coming from a point(point on object) meet at a point after reflection or refraction. An image is virtual if the light rays do not actually meet after reflection or refraction. These rays appear to come from a point which is the point where we say virtual image is formed.
What is the common end point of the sides of an angle?
< the point where the two rays meet is called a vertex.
What is the intersection point of light rays called?
The point of intersection of light rays which have been intentionally manipulated to come to a point of converge, as we do with a parabolic reflecting surface, is called the focus. The parabolic reflector will (by virtue of mathematical principles and the physics of light) redirect parallel incoming rays back off its surface to the focus of the parabola. Links are provided.
The point where two rays meet?
This is the focal point, the point of focus.
What is the point at which the rays of an angle meet?
the vertex
