An individual diagnosed with hypermetropia (long-sightedness) uses a corrective spectacle lens of power +1.5 D+1.5\text{ D}+1.5 D to read a document clearly when it is held at a distance of 25 cm from their eyes.
Explain why the individual’s unaided eye is unable to produce a clearly focused image of the document at this distance.
The document is situated 25 cm in front of the corrective lens. Calculate the distance from the lens to the image formed. Give your answer to an appropriate number of significant figures.
State the term used for the specific position relative to the eye where this virtual image is formed.
