Question
Download Solution PDFA real image of equal size is obtained at a distance of 48 cm from the lens. The type of the lens and its focal length is:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is Convex lens of focal length 24 cm.
Key Points
- Convex mirrors, divergent lenses, and plane mirrors can never provide a true image.
- A true image can only be created with a concave mirror and a converging lens if the item is farther distant from the focus point (i.e., more than one focal length away).
- As the image is an equal size to that of the object. So, the object must be at 2F and also the image.
- So, the focal length of the lens must be 24 cm.
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