1. Tardigrade
  2. Question
  3. Physics
  4. While reading the book a man keeps the page at a distance of 2.5 cm from his eye. He wants to read the book by holding the page at 25 cm. What is the nature of spectacles one should advice him to use to completely cure his eye sight ?

Q. While reading the book a man keeps the page at a distance of 2.5 cm from his eye. He wants to read the book by holding the page at 25 cm. What is the nature of spectacles one should advice him to use to completely cure his eye sight ?

 1969  236 Ray Optics and Optical Instruments Report Error

Solution:

By using a concave lens of focal length 2 . 5 cm, he will not only be able to read but will be able to see even the very distant objects.