For what position of an object a real, diminished image is formed by a convex lens?
A real, diminished image is formed by a convex lens when the position of an object is beyond $2F'$.
Explanation
When an object is placed beyond $2F'$ in front of a convex lens then the image formed is real, inverted, smaller than the object (or diminished), and between $f$ and $2f$ on the other side of the lens.
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(a) For which position of an object, a real, diminished image is formed by a convex lens?(b) Two convex lenses A and B have focal lengths of 2.5 cm and 12.0 cm, respectively. Which lens has a greater power? (c) Describe with the help of a labelled ray-diagram, the formation of image when an object is placed in front of a convex lens between focus and optical centre. State any two characteristics of the image formed.
The image of an object formed by a plane mirror is:(a) virtual (b) real (c) diminished (d) upside-down
Show by drawing a ray-diagram that the image of an object formed by a concave lens is virtual, erect and diminished.
If the image formed by a convex lens is of the same size as that of the object, what is the position of the image with respect to the lens?
If the image formed by a lens is always diminished and erect, what is the nature of the lens?
An image formed by a lens is erect. Such an image could be formed by a$(a)$. convex lens provided the image is smaller than object.$(b)$. concave lens provided the image is smaller than object.$(c)$. concave lens provided the image is larger than object.$(d)$. concave lens provided the image is of the same size.
A real image 2/3rd of the size of an object is formed by a convex lens when the object is at a distance of 12 cm from it. Find the focal length of the lens.
If an object is placed at the focus of a convex lens, where is the image formed?
An object is placed at the following distance from a convex lens of focal length 15 cm:(a) 35 cm (b) 30 cm (c) 20 cm (d) 10 cmWhich position of the object will produce:(i) a magnified real image?(ii) a magnified virtual image?(iii) a diminished real image?(iv) an image of same size as the object?
What is the nature of the image formed by a convex lens if the magnification produced by the lens is +3?
What is the nature of the image formed by a convex lens if the magnification produced by the lens is, $-$ 0.5?
Describe with the help of a ray-diagram, the size, nature and position of the image formed by a convex lens when an object is placed beyond 2f in front of the lens.
(a) Explain why, a real image can be projected on a screen but a virtual image cannot.(b) Draw a ray diagram to show the formation of a real diminished image of an object by a convex lens. In your diagram, the position of object and image with respect to the principal focus should be shown clearly.(c) Name one simple optical instrument in which the above arrangement of convex lens is used.
A ___________ lens will always give a virtual, erect, and diminished image, irrespective of the position of the object.
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