Advertisements
Advertisements
प्रश्न
What is a simple microscope or a magnifying glass? Draw a ray diagram to show its function.
Advertisements
उत्तर
A convex lens works as a simple microscope or a magnifying glass when an object is kept between its optical centre and the focus. The image of the object so obtained is virtual, upright, and magnified.
संबंधित प्रश्न
Draw a neat labelled ray diagram to show the formation of an image by a magnifying glass. State three characteristics of the image.
Define magnifying power of a simple microscope. How can it be increased?
The magnification by a lens is +0.5. Name the lens and state how are u and v related?
What are conjugate foci?
Name the lens used as a magnifying glass.
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 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.
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.
Write an expression for the magnifying power of a simple microscope. How can it be increased?
