Video tutorials - Lens Formula and Magnification Science and Technology - 1 SSC (English Medium)

At which position will you keep an object in front of a convex lens so as to get a real image of the same size as the object? Draw a figure.

Give scientific reason:
Simple microscope is used for watch repairs.

Solve the following example.
5 cm high object is placed at a distance of 25 cm from a converging lens of focal length of 10 cm. Determine the position, size and type of the image.

An object kept 60 cm from a lens gives a virtual image 20 cm in front of the lens. What is the focal length of the lens? Is it a converging lens or diverging lens?

At which position will you keep an object in front of convex lens to get a real image smaller than the object? Draw a figure.

An object is held 20 cm away from a converging lens of focal length 10 cm. Find the position of the image formed.