Advertisements
Advertisements
Question
How does the magnification when the image is at infinity compare with the magnification when the image is at the near point, and which viewing condition is more comfortable?
Options
The infinity case is one less than the near point case; viewing at infinity is more comfortable
The infinity case is one more than the near point case; the near point is more comfortable
The infinity case is one less than the near point case; the near point is more comfortable
The infinity case equals the near point case; both are equally comfortable
Advertisements
Solution
The magnification when the image is at infinity (\[D/f\]) is one less than the magnification when the image is at the near point (\[1 + D/f\]). However, viewing is more comfortable when the image is at infinity, and the difference in magnification is usually small.
