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प्रश्न
Name the lens for which magnification is always less than 1.
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उत्तर
Concave lens.
संबंधित प्रश्न
The following diagram shows an object AB and a converging lens L with foci F1 and F2. Draw two rays from the object AB and complete the diagram to locate the position of the image CD. Also mark on the diagram the position of eye from where the image can be viewed.
A magnifying glass forms ______.
Ray diagram for the formation of image by a magnifying glass.
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?
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?
What is a simple microscope or a magnifying glass? Draw a ray diagram to show its function.
(i) Draw a ray diagram to show how the lens can be used as a ‘magnifying glass’? State the nature of the lens.
(ii) In what respect does the image in (i) above different from the image formed by a concave lens?
