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प्रश्न
An erect, magnified, and a virtual image is formed when an object is placed between the optical centre and principal focus of a lens.
(i) Name the lens.
(ii) Draw a ray diagram to show the formation of the image with the above-stated characteristics.
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उत्तर
(i) The lens is convex.
(ii)
संबंधित प्रश्न
A lens forms an erect, magnified, and virtual image of an object. Where is the object placed in relation to the lens?
A lens forms an erect, magnified and virtual image of an object. Draw a ray diagram to show the formation of image.
An object is placed at a distance of 20 cm in front of a concave lens of focal length 20 cm. find: the magnification of image.
What are conjugate foci?
Why is the focal length of the lens, used as a magnifying glass, kept short?
Will the image formed by a magnifying glass be real or virtual?
Define magnification produced by a lens. State its unit.
A convex lens produces on a screen an image twice the size of the object. If the position of image and object be interchanged, what will be the magnification then?
An object is placed in front of a lens between its optical centre and the focus and forms a virtual, erect, and diminished image. Draw a ray diagram to show the formation of the image with the above-stated characteristics.
An object AB is placed between 2F1 and F1 on the principal axis of a convex lens as shown in the diagram. Copy the diagram and using three rays starting from point A, obtain the image of the object formed by the lens.
