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प्रश्न
What information we seek by the linear magnification of the image when it is positive or negative?
उत्तर
If magnification is positive, then the image will be real and inverted, and if negative then the image will be virtual and erect.
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संबंधित प्रश्न
A magnifying glass forms ______.
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.
The magnification by a lens is -3. 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?
Will the image formed by a magnifying glass be real or virtual?
Name the lens for which magnification can be 1. For what position of the object will the magnification be 1?
What is a simple microscope or a magnifying glass? Draw a ray diagram to show its function.
An erect, magnified, and a virtual image is formed when an object is placed between the optical centre and principal focus of a lens.
(i) Name the lens.
(ii) Draw a ray diagram to show the formation of the image with the above-stated characteristics.
What is a magnifying glass (or a simple microscope)? Draw a ray diagram to show how a convex lens may be used as a magnifying glass. Where should the object be placed? State three characteristics of the image formed.
(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?
