A graph of the ratio of image size to object size (magnification) was plotted against the image distance (v). Which of the following is true?
University of Ilorin PHY108 2023 past question
- The focal length is equal to the gradient of the graph
- The focal length is equal to the inverse of the gradient
- The focal length is directly proportional to the gradient
- The focal length equals the y-intercept of the graph
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