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प्रश्न
Draw a neat labelled ray diagram to show the formation of an image by a magnifying glass. State three characteristics of the image.
उत्तर
If the object (AB) is situated between the focal length and optical centre of a convex lens, then its image (A'B') will form on the same side of the lens.
The image formed will be virtual, magnified and erect.
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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.
The following diagram shows an object AB and a converging lens L with foci F1 and F2 State three characteristics of the image in relation to the object.
What information about the nature of image is real or virtual, do you get from the sign of magnification + or -?
An illuminated object lies at a distance 1.0 m from a screen. A convex lens is used to form the image of the object on a screen placed at a distance of 75 cm from the lens. Find:
- the focal length of the lens, and
- the magnification.
What information we seek by the linear magnification of the image when it is positive or negative?
Name the lens for which magnification is always less than 1.
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?
How is the magnification (m) produced by a lens related to the object distance (u) and the image distance (v)?
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.
Copy and complete the following ray diagram.
