Susan is quite nearsighted; without her glasses, her far point is 38 cm and her

Question

Susan is quite nearsighted; without her glasses, her far point is 38 cm and her near point is 16 cm . Her glasses allow her to view distant objects with her eye relaxed. With her glasses on, what is the closest object on which she can focus?
Susan is quite nearsighted; without her glasses, her far point is 38 cm and her near point is 16 cm . Her glasses allow her to view distant objects with her eye relaxed. With her glasses on, what is the closest object on which she can focus?
With her glasses on, what is the closest object on which she can focus?

Explanation / Answer

far point= 38 cm

for far point, we assume the obeject at infinity and image is formedat far point

using the mirror formula 1/f = 1/p + 1/q

1/f = 1/infinity + 1/-38

f = -38 cm

For the near point: again using mirror formula

1/-38 = 1/p + 1/-16

p = 27.6cm.

so the closest distance= 27.6 cm

Related Questions

Navigate

• Browse (All)
• Browse S
• Subjects

---

---

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