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प्रश्न
Write an expression for the magnifying power of a simple microscope. How can it be increased?
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उत्तर
Is the ratio of the angle of the image subtended at the eye to the angle subtended by the object at the eye when lying at least a distance of distinct vision.
m = 1 + `D/f` where f is the focal length of the lens.
One way to get more magnifying power is to use a lens with a shorter focal length.
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संबंधित प्रश्न
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.
Ray diagram for the formation of image by a magnifying glass.
What information about the nature of image is real or virtual, do you get from the sign of magnification + or -?
If the magnification produced by a lens is - 0.5, the correct statement is ______.
The maximum magnifying power of a convex lens of focal length 5 cm can be ______.
What are conjugate foci?
What information we seek by the linear magnification of the image when it is positive or negative?
Copy and complete the following ray diagram.
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.
(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?
