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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.
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What is the correct word for this definition The point that two rays have in common?
It is called the point of intersection of the two rays. Not a word, but a phrase.
The point at which light rays meet is called the what?
The focal point?
The point of intersection of two rays?
angle
What is made by the intersection of two rays which have the same end point?
An angle.
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.
