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प्रश्न
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.
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संबंधित प्रश्न
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?
What are conjugate foci?
Define the term magnifying power of a simple microscope. How does it depend on the focal length of the lens used?
Name the lens for which magnification is always less than 1.
Copy and complete the following ray diagram.
Copy and complete the following ray diagram.
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(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?
Write an expression for the magnifying power of a simple microscope. How can it be increased?
