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Questions and Answers
Where is the final image of point object 'O' located when formed by the combination?
Where is the final image of point object 'O' located when formed by the combination?
- On a plane surface (correct)
- At a distance of 5 cm from the plane surface
- At a distance of 15 cm from the plane surface
- At a distance of 40 cm from the curved surface
If the radius of curvature is 20 cm, what can be inferred about the image distance when the object is located at a certain point?
If the radius of curvature is 20 cm, what can be inferred about the image distance when the object is located at a certain point?
- The image distance is exactly 20 cm.
- The image distance is greater than the radius of curvature.
- The image distance is less than the radius of curvature. (correct)
- The image distance always equals twice the object distance.
What is the distance from the plane surface to the final image if it is formed away from the surface?
What is the distance from the plane surface to the final image if it is formed away from the surface?
- 10 cm
- 20 cm
- 30 cm (correct)
- 25 cm
Which of the following distances is NOT a location for the final image of point object 'O'?
Which of the following distances is NOT a location for the final image of point object 'O'?
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Which option describes a possible distance of the final image from the curved surface?
Which option describes a possible distance of the final image from the curved surface?
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Study Notes
Optical Systems and Image Formation
- A point object 'O' is used to analyze image formation through various optical surfaces.
- Image formation is dependent on the nature of the optical surface and the distance from the object.
Key Parameters
- Refractive Indices: Indicated as n=1, n=2, and n=3, influencing the light behavior through different mediums.
- Distance Measurements:
- Image can be formed at specific distances from the plane or curved surface.
- Measurable distances include 10 cm, 20 cm, and 30 cm from given surfaces.
Curvature and Principal Axis
- Radius of Curvature: Defined as 20 cm, this parameter is critical in determining the focal point of curved surfaces.
- The Principal Axis serves as a reference line along which light travels in optical systems.
Image Position Options
- Various potential positions for the final image formed by the optical combination include:
- On a plane surface (Option 1)
- 10 cm from the plane surface (Option 2)
- 30 cm from the plane surface (Option 3)
- 20 cm from the curved surface (Option 4)
Correct Answer Insight
- The right answer for the image position is Option A (1), indicating the image is formed on the plane surface.
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