Advertisements
Advertisements
प्रश्न
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?
Advertisements
उत्तर
The object is placed between the lens and the principal focus.
The image is obtained between the lens and the principal focus.

APPEARS IN
संबंधित प्रश्न
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?
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?
Define magnification produced by a lens. State its unit.
Name the lens for which magnification can be 1. For what position of the object will the magnification be 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)?
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.
What is a magnifying glass (or a simple microscope)? Draw a ray diagram to show how a convex lens may be used as a magnifying glass. Where should the object be placed? State three characteristics of the image formed.
