A concave lens has a focal length of 30 cm. Find the position and magnification (m) of the image for an object placed in front of it at a distance of 30 cm. State whether the image is real or virtual ?

Find the position and magnification of the image of an object placed at distance of 8.0 cm in front of a convex lens of focal length 10.0 cm. Is the image erect or inverted?

A magnifying glass forms :

1. a real and diminished image
2. a real and magnified image
3. a virtual and magnified image
4. a virtual and diminished image

The maximum magnifying power of a convex lens of focal length 5 cm can be :

1. 25
2. 10
3. 1
4. 6