(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A woman is wearing bifocals that have one-half of the lens with a power of -1.2 D and the other with a power of 1.8 D. A lens provides her with a far point set at infinity and other will give her a near point of 25 cm.

Where are her near point and far point WITHOUT her glasses?

What is her power of accomodation, what is therefore the range in which her Diopters can change?

2. Relevant equations

1/f = 1/V + 1/B

3. The attempt at a solution

do I just use the near point and far point equations for the first one?

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Bifocul Optics Problem Help Please

**Physics Forums | Science Articles, Homework Help, Discussion**