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प्रश्न
Copy and complete the following ray diagram.
उत्तर
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संबंधित प्रश्न
Define magnifying power of a simple microscope. How can it be increased?
Ray diagram for the formation of image by a magnifying glass.
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.
Define the term magnifying power of a simple microscope. How does it depend on the focal length of the lens used?
Name the lens used as a magnifying glass.
What information we seek by the linear magnification of the image when it is positive or negative?
Define magnification produced by a lens. State its unit.
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.
(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?
State two uses of magnifying glass.
