0 10 20 30 0 10 20 30 40 50 ocular micrometer stage micrometer 0 0.1 0.2 0.3 (mm) 10X objective 0 0.1 40X objective For Questions 7 and onwards you will need your microscope calibration sheet handout. For this activity, the above eyepiece/ocular micrometer and stage micrometer viewed at the 10X & 40X magnification have already been superimposed. Using the known increments of the stage micrometer (0.1mm), 1) Determine three calibration points of the eyepiece/ocular micrometer and the stage micrometer at the 10X magnification and record it on your calibration sheets. 2) Take an average of your three calibration values. 3) Choose from the choices below, which calibration average closely matches the value you obtained. Note: Refer to the calibration formula and use the correct calibration unit.
Added by Amy J.
Close
Step 1
The stage micrometer has divisions that are 0.1 mm apart. Show more…
Show all steps
Your feedback will help us improve your experience
Kelan H and 65 other Biology educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Sri K.
Use the stage micrometer to calibrate your microscope's 10x objective. The ocular lens or eyepiece is always 10x. 10x objective 10x eyepiece Ocular micrometer 0 10 20 30 40 50 60 70 80 90 100 0 .1 .2 .3 .4 .5 .6 .7 .8 .9 1.0 Stage micrometer
(III) An inexpensive instructional lab microscope allows the user to select its objective lens to have a focal length of 32 mm, 15 mm, or 3.9 mm. It also has two possible eyepieces with magnifications 5$\times$ and 15$\times$. Each objective forms a real image 160 mm beyond its focal point. What are the largest and smallest overall magnifications obtainable with this instrument?
OPTICAL INSTRUMENTS
Compound Microscope
Recommended Textbooks
Biology for AP Courses
Objective Biology for NEET
Introduction to General, Organic and Biochemistry
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD