magnification = size of image/actual size of specimen. 2. Keeping in mind that a

Question

magnification = size of image/actual size of specimen. 2. Keeping in mind that an image size needs to be at least 1 mm in order to be observed by the human eye, determine what minimum magnification you would need to observe the following organisms. After the minimum magnification is know, determine which objective lens (10x, 40x, or 100x) you would need to set on the microscope in order to view the organisms. Minimum Objective Needed magnification Organism Average Size Human B Cel 15 um Escherichia coli 2 um Red Blood Ce 8um

Explanation / Answer

Human B cells

Minimum magnification- 66.66 (1 micro meter = 0.001milli meter -> 1/0.015)

Objective Needed- 100X (10X objective * 10X eye piece give maximum mangnification of 100X)

Escherichia coli

Minimum magnification - 500 ( 1/0.002)

Objective Needed- 1000X (10X eye piece * 100X objective)

Red blood cells

Minimum magnification -125 (1/0.008)

Objective Needed- 400X (10X eye piece * 40X objective)

Related Questions

Navigate

• Browse (All)
• Browse M
• Subjects

---

---

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