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प्रश्न
What is a magnifying glass?
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उत्तर
A magnifying glass is a convex lens of short focal length. It is mounted in a lens holder for practical use.
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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.
The magnification by a lens is -3. Name the lens and state how are u and v related?
The magnification by a lens is +0.5. Name the lens and state how are u and v related?
Name the lens used as a magnifying glass.
Name the lens for which magnification can be 1. For what position of the object will the magnification be 1?
How is the magnification (m) produced by a lens related to the object distance (u) and the image distance (v)?
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.
Write an expression for the magnifying power of a simple microscope. How can it be increased?
