Advertisements
Advertisements
प्रश्न
Copy and complete the following ray diagram.
Advertisements
उत्तर
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.
Ray diagram for the formation of image by a magnifying glass.
The focal length of a convex lens is 25 cm. At what distance from the optical centre of the lens an object be placed to obtain a virtual image of twice the size?
Define the term magnifying power of a simple microscope. How does it depend on the focal length of the lens used?
Why is the focal length of the lens, used as a magnifying glass, kept short?
Will the image formed by a magnifying glass be real or virtual?
A convex lens produces on a screen an image twice the size of the object. If the position of image and object be interchanged, what will be the magnification then?
Show with the help of a ray diagram, the path of the ray when incident normally on the first surface of the glass block, through the block and the liquid.
What is a simple microscope or a magnifying glass? Draw a ray diagram to show its function.
(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?
