Advertisements
Advertisements
Question
What is a simple microscope or a magnifying glass? Draw a ray diagram to show its function.
Advertisements
Solution

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.
RELATED QUESTIONS
The speed of light in air is 3 × 108 m s-1. Calculate the speed of light in glass. The refractive index of glass is 1.5
A lens forms an erect, magnified, and virtual image of an object. Name the device which uses this principle.
What information about the nature of image is real or virtual, do you get from the sign of magnification + or -?
An object is placed at a distance of 20 cm in front of a concave lens of focal length 20 cm. find: the magnification of image.
The magnification by a lens is -3. Name the lens and state how are u and v related?
Why is the focal length of the lens, used as a magnifying glass, kept short?
Name the lens for which magnification is always less than 1.
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.
Show with the help of a ray diagram, the path of the ray when incident normally on the first surface of the glass block, through the block and the liquid.
Copy and complete the following ray diagram.

