infinite
Infinitely many.
To locate an image, only two non-parallel rays are needed. These rays intersect at the image point, which is the point where the image is formed.
It depends on what information about the rays is given. If all you have is two rays drawn on a sheet of paper then you need to measure the angle using a protractor. If their equations are given - in standard or vector form, then there are formulae that will enable you to work out the angle between them.
2 is the minimum number of light rays required to locate the image (of a point object) formed by a lens. First find the path of rays after refraction and then their point of intersection gives the location of the image.
wew
that is impossible. if they aren't parrallel, and they're rays they have to intersect at some point. This is because rays spread at both ends. The above answer is only correct if the rays on drawn on the same plane or if they are drawn on convergent (intersecting) planes, so the correct answer is the two rays must be drawn on separate planes that are not convergent, since all non-parallel lines on the same plane, or on convergent planes, will eventually intersect. If they are drawn in 3 dimensions than you can avoid them intersecting. Perhaps the questions is not specific enough?
No, the normal is drawn perpendicular to the surface of the mirror or lens at the point where light rays strike. It is used to determine the angle of incidence and reflection or refraction.
Infinitely many. There an infinite number of points on a line and each point can be an end point of two rays.
Yes, numerous rays can have the same point.
They have one point in common.
The point at which the rays of an angle intersect is the vertex.
The point where light rays meet is called the focal point.