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A luminous point object is placed at `O`, whose image is formed at `I` as shown in the figure. `AB` is the optic axis. Which of the following statements are correct ? A. If a lens is used to obtain image, the lens must be converging.B. If a mirror is used to obtain image, the mirror must be a convex mirror having pole at the point of intersection of lines `OI` and `AB`.C. Position of principal focus of mirror cannot be found.D. `I` is real image. |
| Answer» Correct Answer - Use rays diagram | |