Which type of lens forms always a virtual image?

Mark *T' if the statement is true and 'F' if it is false: A concave lens always forms a virtual image

A convex lens of focal length 16 cm forms a virtual image of double the size of the object. What is the distance of the object from the lens ?

Which type of mirror can forma real image?

Which type of image is formed on the retina?

Define the power of lens. What is the meaning of "the power of lens is 1 dioptre" if the power of a lens -2.0D, then what type of lens is that? when an object is kept at infinity from this type of lens, what is the size of the image formed.