A microscope has an objective lens with a focal length of 19.5 mm and an eyepiece with a focal length of 6.2 mm. With the length of the barrel set an 33.0 cm, the diameter of a red blood cell’s image...
A microscope has an objective lens with a focal length of 19.5 mm and an eyepiece with a focal length of 6.2 mm. With the length of the barrel set an 33.0 cm, the diameter of a red blood cell’s image subtends an angle of 1.2 milli-radians with the eye. The final image distance is 29.0 cm from the eyepiece.
(a) What is the length of the image of the of the cell produced by the eyepiece?
(b) Using the lens equation, find the object distance for the eyepeice that creates the image observed.
(c) What is the magnification produced by the eyepeice? (Hint use the M equation from chapter 23, not m = 25/f, this assumes an image distance of 25 cm).
(d) Find the object distance for the objective, p1. (The distance between the objective and the cell.)
(e) Find the magnification for the objective, M1.
(f) Find the overall magnification, meM1.
(g) What is the actual diameter of the red blood cell?
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A microscope has an objective lens with a focal length of 19.5 mm and an eyepiece with a focal length of 6.2 mm. With the length of the barrel set an 33.0 cm, the diameter of a red blood cell’s image...
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Consider a microscope that consists of an objective lens and an eyepiece separated by 19.7 cm. The focal length of the objective lens is 0.20 cm, and the focal length of the eyepiece lens is 2.5 cm. Assume the final image is produced at a distance of 25 cm. (a) Find the magnification of the microscope. You may assume that the focal lengths are far smaller than the size of the microscope. (b) Draw a ray diagram for this microscope.
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A microscope has an objective lens with f = 16.22 mm and an eyepiece with f = 9.5 mm. With the length of the microscope's barrel set at 29.0 cm, the diameter of an erythrocyte's image subtends an angle of 1.43 mrad with the eye. If the final image distance is 29.0 cm from the eyepiece, what is the actual diameter of the erythrocyte?
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A microscope has an objective lens of focal length 00 mm. The objective forms an image 18 cm from the lens. The focal length of the eyepiece is 70 cm. What is the distance between the lenses?
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Consider a microscope that consists of an objective lens and an eyepiece separated by 19.7 cm. The focal length of the objective lens is 0.20 cm, and the focal length of the eyepiece lens is 2.5 cm. Assume the final image is produced at a distance of 25 cm. (a) Find the magnification of the microscope. You may assume that the focal lengths are far smaller than the size of the microscope. (b) Draw a ray diagram for this microscope.
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