A Lens forms an upright and diminished image of an object

Light (10)

A Lens forms an upright and diminished image of an object when the object is placed at the focal point of the given lens.

1. Name the lens.
2. Draw a ray diagram to show the image formation.

Answer

(i) Concave lens

(ii) A ray shown parallel to the principal axis and appears to be coming from F2. A ray shown passing through optical centre and moving un-deviated.

Image shown correctly with object at the focus.