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प्रश्न
A lens forms an erect, magnified, and virtual image of an object. Name the device which uses this principle.
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उत्तर
'Magnifying glass' uses this principle.
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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.
Draw a neat labelled ray diagram to show the formation of an image by a magnifying glass. State three characteristics of the image.
A magnifying glass forms ______.
What information about the nature of image is real or virtual, do you get from the sign of magnification + or -?
The focal length of a convex lens is 25 cm. At what distance from the optical centre of the lens an object be placed to obtain a virtual image of twice the size?
The magnification by a lens is +0.5. Name the lens and state how are u and v related?
Define the term magnifying power of a simple microscope. How does it depend on the focal length of the lens used?
What information we seek by the linear magnification of the image when it is positive or negative?
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?
State two uses of magnifying glass.
