PHYSICS · Single correct · CBSE · Physics · Ray Optics and Optical Instruments · Ray Optics and Optical Instruments
Problem
While reading fine print, a student can obtain a larger magnification by keeping the final image at the near point instead of at infinity. Yet the ‘image at infinity’ setting is preferred for prolonged use. Which option states the most appropriate reason?
(a) The eye is most relaxed when viewing an image at infinity, so fatigue is minimum.
(b) A virtual image at infinity appears brighter than one at the near point.
(c) When the image is at infinity, the angular magnification becomes (1+fD), which is larger.
(d) Lens aberrations are minimum when the image is formed at infinity.