A jeweller inspects a gemstone with a thin converging lens of focal length mm used as…
PHYSICS · Subjective · Fermi University Physics · Optics & Photonics · Geometrical optics and imaging · Geometrical optics and imaging
Optics and Photonics, Ch Stops, pupils and optical instruments
Problem
A jeweller inspects a gemstone with a thin converging lens of focal length f=40 mm used as a simple magnifier. The stone is placed at the front focal point of the lens, so that the image is at infinity and the eye is relaxed. Take the standard near point d0=250 mm and ignore the small distance between lens and eye. What is the angular magnification MA?