An anthropologist focuses her camera on a distant mountainpeak when she sees a v

Question

An anthropologist focuses her camera on a distant mountainpeak when she sees a very interesting looking monkey just 5.2 m away. Quickly sheadjusts the focus and takes the picture. If her lens has a focal length of 41mm, howmuch did she have to move it to get the monkey in focus? An anthropologist focuses her camera on a distant mountainpeak when she sees a very interesting looking monkey just 5.2 m away. Quickly sheadjusts the focus and takes the picture. If her lens has a focal length of 41mm, howmuch did she have to move it to get the monkey in focus?

Explanation / Answer

An anthropologist focuses her camera on a distant mountainpeak when she sees a very interesting looking monkey just 5.2 m away. Quickly sheadjusts the focus and takes the picture. If her lens has a focal length of 41mm, howmuch did she have to move it to get the monkey in focus?
initially when the camera is focused on a distant object
v=f=41mm
when it is focused on a monkey
u=5.2m=5200mm
f=41mm
so v= ?
using 1/v=1/f-1/u=1/41-1/5200=0.0243-0.000192=0.02410=>v=41.49mm
so he has move it by 0.49mm

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

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