A forensic scientist is using a microscope with a 15× objective and a 5× eyepiece to examine a hair from a crime scene. How far from the objective is the hair? Assume a length L = 160 mm.
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Q: A microscope has an objective lens with a focal length of 16.22 mm and an eyepiece with a focal…
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- An orthodontist wishes to inspect a patient's tooth with a magnifying mirror. She places the mirror 1.00 cm behind the tooth. This results in an upright, virtual image of the tooth that is 9.00 cm behind the mirror. (a) What is the mirror's radius of curvature (in cm)? cm (b) What magnification describes the image described in this passage?An objective of an astronomical telescope has a diameter of 12.5 cm and a focal length of 85.0 cm. When it is used with an eyepiece having a focal length of 2.50 cm and a diameter of 1.50cm, what will be (a) the angular magnification, (b) the diameter of the exit pupil, (c) the object-field angle, (d) the image-field angle, and (e) the eye relief?A microscope has an objective lens with a focal length of 16.22 mm and an eyepiece with a focal length of 9.28 mm. With the length of the barrel set at 35.0 cm, the diameter of a red blood cell's image subtends an angle of 1.43 mrad with the eye. If the final image distance is 35.0 cm from the eyepiece, what is the actual diameter of the red blood cell? Hint: To solve this equation, go back to basics and use the thin-lens equation. um
- A compound microscope has a distance of 161 mm between the objective lens and the eyepiece. The focal lengths of the objective and the eyepiece are 4.03 mm and 25.9 mm, respectively. Determine the magnitude of the total angular magnification ? of the microscope for a person whose near point is 25.0 cm away.A thin lens is comprised of two spherical surfaces with radii of curvatures of 32.4 cm for the front side and -26.9 cm for the back side. The material of which the lens is compose has an index of refraction of 1.49. What is the magnification of the image formed by an object placed 43.7cm from the lens?A doctor wishes to inspect a patient's tooth with a magnifying mirror. He places the mirror 0.750 cm behind the tooth. This results in an upright, virtual image of the tooth that is 10.0 cm behind the mirror. (a) What is the mirror's radius of curvature (in cm)? cm (b) What magnification describes the image described in this passage?
- A technician in a pathology laboratory is using a compound microscope to examine tissue samples. The focal length of the objective of the microscope is 0.35 cm, and the focal length of the eyepiece is 2.5 cm. The two lenses are separated by 27 cm. One day, the technician forgot to wear his contact lenses, which have a prescription of +1.5 diopters and allow him to see objects clearly at 25 cm. When he looks into the microscope without wearing his contacts, what is the approximate angular magnification of the scope? Number UnitsA forensic scientist examines a hair from a crime scene using a microscope with a 15x objective and a 5x eyepiece. How far is the hair from the goal? Assume L = 160 mm in length.A fish-tank has negligibly thin walls and a radius of 15 cm. Locate its focus relative to its walls when it is filled with water (nw = 4>3).