To locate the position of an image formed by a lens using ray tracing,one needs to
A)have rays coming from multiple points of the object and find an intersect point.
B)have rays coming from one point of the object and find an intersect point.
C)have a ray going parallel to the axis.
D)have a ray pass through the edge of the lens without bending.
E)None of the above will give the location of the image.

Question

Quizplus · Accepted Answer

Ray tracing involves drawing rays from one point on the object to the lens, and then from the lens to the corresponding point on the image. These rays are traced until they intersect at the location of the image. Therefore, having rays come from one point on the object (choice B) is sufficient to locate the position of the image. Choices A, C, and D may be helpful in constructing the ray diagram and determining the characteristics of the image, but they are not necessary for finding its location. Choice E is incorrect as one of the options (B) does provide the correct answer.

To Locate the Position of an Image Formed by a Lens