Images Formed by Concave Lenses

A convex lens forms a real, diminished point-sized image at focus. Then the position of the object is at

Show by a ray diagram that a diverging lens cannot form a real image of an object placed anywhere on its principal axis.

Can a concave lens form an image of size two times that of the object? Give reason.

Is it possible for a concave lens to form an image of size two times that of the object? Write Yes or No.

The convex lens always gives small virtual image.

Draw ray diagrams showing the image formation by a concave lens when an object is placed

1. at the focus of the lens
2. between focus and twice the focal length of the lens
3. beyond twice the focal length of the lens

While doing an experiment for the determination of focal length of a convex lens, Raja Suddenly dropped the lens. It got broken into two halves along the axis. If he continues his experiment with the same lens,

1. can he get the image?
2. Is there any change in the focal length?

Draw a ray diagram to show what happens when a ray of light parallel to the principal axis of a concave lens passes through it.