Posted by **please help** on Sunday, March 24, 2013 at 1:17am.

A student is reading a lecture written on a blackboard. The lenses in her eyes have a refractive power of 59.82 diopters, and the lens-to-retina distance is 1.686 cm. (a) How far is the blackboard from her eyes? (b) If the writing on the blackboard is 4.81 cm high, what is the height of the image on her retina?

## Answer This Question

## Related Questions

- physics - A person sees clearly wearing eyeglasses that have a power of −2...
- Physics - Without glasses, your uncle Albert can see things clearly only if they...
- physics - The lens-to-retina distance of a woman is 1.96 cm, and the relaxed ...
- PHYSICS - Assuming an object at infinity, a person has far points of 5.2 m from ...
- Physics - A patient has a far point of 34.6 cm and a near point of 26.0 cm. What...
- physics - A telescope has an objective with a refractive power of 1.20 diopters ...
- math - 91 five digit numbers are written on a blackboard. How do you prove that ...
- maths - 91 five-digit numbers are written on a blackboard. Prove that one can ...
- physics - Your friend is far-sighted with a near-point distance of 512 cm. What ...
- Physics - Two converging lenses with focal lengths 5 cm and 30 cm are placed 35 ...

More Related Questions