When a real object is placed 25cm from a lens, a real image if formed. Mark the correct statement(s) from the following:

When an object is placed 15cm from a lens, a virtual image is formed. Mark the correct statements.

When an object is placed 15cm from a lens, a virtual image is formed. Mark the correct statements.

When an object is placed 40cm from a diverging lens, its virtual image is formed 20cm from the lens. The focal length and power of lens are

When an object is placed 40cm from a diverging lens, its virtual image is formed 20cm from the lens. The focal length and power of lens are

An object is placed at 10 cm from a lens and real image is formed with magnification of 0.5. Then the lens is

An object is placed at 10 cm from a lens and real image is formed with magnification of 0.5. Then the lens is

When an object is placed at a distance of 15 cm from a convex lens, a real image is formed at a distance of 30 cm. What is the focal length of the lens?

When an object of height 3 cm is placed at a distance of 30 cm from a lens, a real image is formed at a distance of 60 cm. Find out the height of the image.