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प्रश्न
Why is the focal length of the lens, used as a magnifying glass, kept short?
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उत्तर
The focal length of the lens used as a magnifying glass is kept small to increase its magnifying power.
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संबंधित प्रश्न
Where is the object placed with respect to the principal focus of a magnifying glass, so as to see its enlarged image? Where is the image obtained?
If the magnification produced by a lens is - 0.5, the correct statement is ______.
The magnification by a lens is -3. Name the lens and state how are u and v related?
What are conjugate foci?
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?
How is the magnification (m) produced by a lens related to the object distance (u) and the image distance (v)?
Draw a neat diagram to explain the action of a convergent (convex) lens as a reading glass (or magnifying glass). State the characteristics of the image formed.
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.
An object AB is placed between 2F1 and F1 on the principal axis of a convex lens as shown in the diagram. Copy the diagram and using three rays starting from point A, obtain the image of the object formed by the lens.
