You have a microscope equipped with 10 x oculars and 4 objectives, which exhibit the following characteristics (M, NA): Tick the right answers: o Objectives B and C are equivalent. o Objective D will allow more detailed observation than objective C. o To see small structures, you should choose objective D rather than C. o Objective D has a lower resolution than objective C. o To observe large objects, it is better to use objective B rather than objective C
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You have a microscope equipped with 10 x oculars and 4 objectives, which exhibit the following characteristics (M, NA):
Tick the right answers:
o Objectives B and C are equivalent.
o Objective D will allow more detailed observation than objective C.
o To see small structures, you should choose objective D rather than C.
o Objective D has a lower resolution than objective C.
o To observe large objects, it is better to use objective B rather than objective C
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Solved in 4 steps
- You have a microscope equipped with 10 x oculars and 4 objectives, which exhibit the following characteristics (M, NA): A=(4 x/0.13); B=(20 x/0.4); C=(20 x/0.7); D=(40 x/0.65) Tick the right answers: o Objectives B and C are equivalent. o Objective D will allow more detailed observation than objective C. o To see small structures, you should choose objective D rather than C. o Objective D has a lower resolution than objective C. o To observe large objects, it is better to use objective B rather than objective CThe field of view (FOV) is the entire circular image we see when looking into the eyepiece. The diameter of the FOV gets smaller as we increase magnification. It can be measured by using a stage micrometer like a ruler, measuring from edge to edge. Notice that the stage micrometer is 1000 microns (µm) in length, and the field of view under the lowest magnification is 5000 µm. Describe how we measure it?The following questions talk about increasing magnification in microscopes. Please answer questions 1 and 2 After a specimen is in focus, where in the field of view should position the specimen before increasing the magnification (be precise)? (QUESTION 2 HAS TWO PARTS TO IT): To increase the magnification, which objective should you click into position next? After refocusing the specimen with the new objective, if you want to increase the magnification even more, which objective should you now click into position?
- Which of the following statements are true in the context of the microscope's field of view? I. It is the observable area within a circular space as defined by the lenses II. FOV is the smallest on the lowest power objective III. FOV is the maximum area visible through the microscope eyepiece IV. When you switch to a higher power, the field of zooms out towards the centerImagine you are using a microscope with 5x eye pieces (instead of 10x like ours). If you change from the 10x objective lens to the 40x objective lens, how does the total magnification change? Group of answer choices: -it is 5 times stronger with the 40x -it is 5 times weaker with the 40x -it is 4 times stronger with the 40x -it is 30 units weaker -it is 30 units stronger -it is 4 times weaker with the 40xImagine you are using a microscope with 5x eye pieces (instead of 10x like ours). If you change from the 10x objective lens to the 40x objective lens, how does the total magnification change? O it is 30 units stronger O it is 4 times weaker with the 40x it is 5 times weaker with the 40x it is 30 units weaker O it is 5 times stronger with the 40x O it is 4 times stronger with the 40x 99+ 近
- 1. In the following table, fill in the missing information in order to calculate the Total Magnifica- tion for each objective lens. Use the information provided in the laboratory exercise to help you. Magnification of Magnification of Objective Lens Total Magnification Objective Lens Ocular Lens Lowest Power 4X Higher Power 10X Greater Power 40X Highest Power 100X 2. What would the total magnification be if a microscope had 15X ocular lenses and 4X, 10x, 45X and 95X objective lenses? Insert the correct information in the following table. Magnification of Objective Lens Magnification of Objective Lens Total Magnification Ocular Lens 4X Objective lens 10X Objective lens 45X Objective lens 95X Objective LensCalculate the diameter of the field of view for each total magnification on your microscope in millimeters (mm) and then convert this value to micrometers (um): 4,500 um Scanning (40X): 1.8 mm x 100X/40X = 5 mm = %3D Low power (100X): FOV diameter = 1.8 mm = 1,800 um 1.8 mm x 100X/400X = 0.45 mm =450 um 180 um High power (400X): 1.8 mm x 100X/1000x = 28 mm = Oil immersion (1000X): %3D Draw and estimate the length of a single Euglena (high power) and Paramecium (low power): Paramecium Euglena total magnification total magnification FOV diam. um FOV diam. um length um length um4) Answer true or false to each of the following statements. On high power, you should use the coarse adjustment knob. The diaphragm determines how much light shines on the specimen. The low power objective has a greater magnification than the scanning objective. The fine focus knob visibly moves the stage up and down. Images viewed in the microscope will appear upside down. If a slide is thick, only parts of the specimen may come into focus. The type of microscope you are using is a scanning microscope. For viewing, microscope slides should be placed on the objective. In order to switch from low to high power, you must rotate the revolving nosepiece. The total magnification of a microscope is determined by adding the ocular lens power to the objective lens power.
- Calculate the diameter of the field of view for each total magnification on your microscope in millimeters (mm) and then convert this value to micrometers (um): 4.5 mm = 4,500 um Scanning (40X): 1.8 mm x 100X/40X = Low power (100X): FOV diameter 1.8 mm = 1,800 um High power (400X): 1.8 mm x 100X/400X = 0.45 mm = 450 um Oil immersion (1000X): O.18m 180 um 1.8 mm x 100x/1000X = Draw and estimate the length of a single Euglena (high power) and Paramecium (low power): Paramecium Euglena total magnification total magnification 400x yoox FOV diam. FOV diam. um uni length length umFor a microscope that has an objective lens magnification of 100X and an ocular lens magnification of 5X, calculate the total magnification. 500X O 1000X O 50X O 100X O No listed answer is correct.Previous question: The field of view is the maximum area visible through the lenses of a microscope, and it is represented by a diameter. To determine the diameter of your field of view, you can place a transparent metric ruler under the low power (10X) objective of a microscope. You would focus the microscope on the scale of the ruler and measure the diameter of the field of vision in millimeters. Refer to the image taken of this preparation below. What is the approximate field of view as seen by this 10X objective. Note: This microscope has a 10X eyepiece, giving a total magnification of 100X. The image shows the 1mm is for this question. - Answer for this question was 3mm.