Advertisements
Advertisements
प्रश्न
Define the term magnifying power of a simple microscope. How does it depend on the focal length of the lens used?
Advertisements
उत्तर
The magnifying power of a simple microscope is defined as the ratio of the angle subtended by the image at the eye to the angle subtended by the object at the eye if it is assumed to be placed at the least distance of distinct vision.
Shorter the focal length of the lens used, larger is its magnifying power.
संबंधित प्रश्न
A lens forms an erect, magnified, and virtual image of an object. Name the device which uses this principle.
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?
The maximum magnifying power of a convex lens of focal length 5 cm can be ______.
Name the lens for which magnification is always less than 1.
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?
How is the magnification (m) produced by a lens related to the object distance (u) and the image distance (v)?
An object is placed in front of a lens between its optical centre and the focus and forms a virtual, erect, and diminished image. 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.
