5. You find the following rack of eyeglasses for sale in a grocery store in town

Question

5. You find the following rack of eyeglasses for sale in a grocery store in town. What statement below best describes the corrective lenses available on this rack (as shown in the photo)? +1.50 +2.00 WHO'S THAT BEHIND THOSE FOSTER GRANTS. A. Both glasses are for near-sighted people; the front set of lenses have a longer focal length than do the lenses in the back B. Both glasses are for near-sighted people; the front set of lenses have a shorter focal length than do the lenses in the back. C. Both glasses are for far-sighted people; the front set of lenses have a longer focal length than do the lenses in the back. D. These lenses do not correct for near- or far-sightedness E. Both glasses are for far-sighted people; the front set of lenses have a shorter focal length than do the lenses in the back

Explanation / Answer

+D power denotes that it is of converging lens, hence lenses are used for near sighted people.

The focal length is inversely proportional to power. Hence correct ans is B.

the focal length of lens of power 2 < focal length of lens of power 1.5

Related Questions

Navigate

• Browse (All)
• Browse 5
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.