An optometrist asks a patient to compare two viewing conditions using the same simple…
PHYSICS · Multi-part · CBSE · Physics · Ray Optics and Optical Instruments · Ray Optics and Optical Instruments
Problem
An optometrist asks a patient to compare two viewing conditions using the same simple magnifier.
(i) Draw a neat labelled ray diagram showing the formation of the final image at infinity by the magnifier.
(ii) Draw a second ray diagram for the case when the final image is at the near point.
(iii) Using the diagrams, describe the nature (real/virtual, erect/inverted) and relative size of the images in each case.
(iv) Explain how the degree of accommodation of the eye differs between the two cases and relate this to the comfort of a young child’s eye versus that of an elderly person.