Biology 1406 Lab Exam 1 fully solved rated A+

Biology 1406 Lab Exam 1 fully solved rated A+Why is oil immersion used? - correct answer To reduce the amount of light rays that are refracted away from the objective lens. It increases numerical aperture and maintains a uniform light speed. increase the resolving power of a microscope. Prevents refraction of light. What parts of the microscope does light travel through? - correct answer Illuminator-The light source for the microscope. Diaphragm-Controls the amount of light entering the condenser. Condenser lens- Focuses light through the specimen. How do you calculate total magnification? - correct answer multiply magnification of eyepiece by magnification of the objective. calibrating microscope ocular micrometer(calculation) - correct answer Ocular Micrometer's Pitch Length (under the microscope) = [Actual Micrometer Pitch Length］ ÷ ［Objective Lens Magnification］ 7 stage units = 10 ocular units Then: 7 stage units is equivalent to .07 mm (7 x .01 = .07 mm)