State the changes in the position, size and nature of the image of an object when brought from infinity up to a convex lens. Illustrate your answer by drawing ray diagrams.

State the changes in the position, size and nature of the image of an object when brought from infinity up to a concave lens. Illustrate your answer by drawing diagrams.

When an object is placed at a distance 5 cm from a convex lens of focal length 10 cm. What is the nature of the image?