Advertisements
Advertisements
Question
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
Solution
The object is placed between the lens and the principal focus.
The image is obtained between the lens and the principal focus.

APPEARS IN
RELATED QUESTIONS
A lens forms an erect, magnified, and virtual image of an object. Where is the object placed in relation to the lens?
What is a magnifying glass?
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?
An illuminated object lies at a distance 1.0 m from a screen. A convex lens is used to form the image of the object on a screen placed at a distance of 75 cm from the lens. Find:
- the focal length of the lens, and
- the magnification.
The magnification by a lens is +0.5. Name the lens and state how are u and v related?
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.
Write an expression for the magnifying power of a simple microscope. How can it be increased?
State two uses of magnifying glass.
