[单选题]
The near point of a farsighted person is 100 cm. She places reading glaso8ykdy33i 5h qqkeh o8r(-l:e ses clo-k358 l :rdq khy iq8oeey(oh3oum2ltqe(,d hk -:xk(se to her eyes, and with them she can comfortably read a newspaper at a distance of 25 c u(:ohqmxkt,2 - ke(dlm. What lens power is required?
Post time 2024-1-26 22:03:25