Question

Q.25 The distance of distinct vision of a person is 50 cm. He wants to
read a book placed at 25 cm. What should be the focal length and
power of the spectacles.
2+1=3​

Answer 1

Explanation:

The distance of distinct vision of a person is 50cm. He wants to read a book placed at 25cm. What should be the focal length of the spectacles ? ∴f=+50cm.