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प्रश्न
Construct ray diagrams to illustrate the formation of a virtual image using a diverging lens.
उत्तर
When an object is placed anywhere between the optic centre and infinity of a converging lens, the image formed is virtual, erect, and diminished as shown in the figure.
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संबंधित प्रश्न
If an object is placed 21 cm from a converging lens, the image formed is slightly smaller than the object. If the object is placed 19 cm from the lens, the image formed is slightly larger than object. The approximate focal length of the lens is ______.
Things always look small on viewing through a lens. What is the nature of the lens?
An object is placed 10 cm from a lens of focal length 5 cm. Draw the ray diagrams to show the formation of image if the lens is diverging.
When an object is kept at any distance in front of a concave lens, the image formed is always:
(a) virtual, erect and magnified
(b) virtual, inverted and diminished.
(c) virtual, erect and diminished
(d) virtual, erect and same size as object
The following diagram in given below shows an object OA and its virtual image IB formed by a lens.
A concave lens, if kept at a proper distance from an object, can form its real image.
A concave lens forms the image of an object which is ______.
State two applications of a concave lens.
A virtual diminished image is formed when an object is placed between the optical centre and the principal focus of a lens.
(i) Name the type of lens which forms the above image.
(ii) Draw a ray diagram to show the formation of the image with the above stated characteristics.
Choose the correct alternative and rewrite the following:
Inside water, an air bubble behaves ....................
