Question

What kind of image is formed by a convex lens when the object is less than a focal length away from the object?


A. an image that is always smaller than the object
B.a virtual image
C. none, because the lens is too close to the object
D. an inverted real image

Answer 1

@ganeshie8

Answer 2

http://www.acs.psu.edu/drussell/Demos/RayTrace/Lens-Converging.gif

Answer 3

Notice these things in above animation :
1) When the object is at infinity to the left of lens, the image is formed at the focal plane to the right of lens
2) As the object moves closer to the lens, the image moves away from the focal plane
3) When the object reaches the focus on left of lens, the image reaches infinity on right of lens
4) As the object moves toward the lens from the focus, the image "appears" to be formed on the left side of the lens itself