A light microscope that has an objective lens of x 10 and an ocular lens of x 20 has a magnification of?
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200 I think you have the ocular and objective reversed
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With a conventional bright field microscope, light from an incandescent source is aimed toward a lens beneath the stage called the condenser, through the specimen, through an objective lens, and to the eye through a second magnifying lens, the ocular or eyepiece. Most microscopes will have a built-in illuminator.\n\nI hope that helps
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For part 1, if the cell's diameter was 1/15 of the total field, and the field was 450 microns across, then the cell's actual diameter was 450 microns/15 = 30 microns = 3 * 10^-5 meters.\n\nThe diameter of this cell in the drawing is 0.5 cm = 5*10^-3 meters.  This drawing therefore has a magnification of (5*10^-3)/(3*10^-5) = 166.6666666...times.\n\nFor part 2, The magnification is given by (size in image)/(actual size), so we have that 45000 = (1.5 mm)/a, where "a" is the actual thickness.  Solving for a, we get a = 1.5mm/45000 = 3.333*10^-8 meters = 33.3 nanometers = 0.0333 microns.\n\n-----------------------\n\nAs for the question posed in the "additional details", when the magnification of a microscope is increased, the diameter of the field being imaged decreases (choice "A").
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Something with lenses and light!
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Cidar wood oil and lens in compound microscope have the same refractive index. So the oil is used. Magnifying power is the same with any medium.
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10 milimeters in 1 cm
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I came up with a magnification of about 16\n\nThis interactive website will calculate what you need ==>http://www.csgnetwork.com/telescopemagcalc.html
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You multiply the two numbers, so 58 x 10 = 580 total magnification.\n\nGood luck!!
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It's what you peer into. There's a diagram here:\n\nhttp://en.wikipedia.org/wiki/Optical_microscope
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Here are just a few:\n\nSimple light\nCompound light\nDisecting light\nConfocal\nScanning electron\nTransmission electron\n\nI'm sure you could do a Google search on "microscopes" and find what you're looking for.
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Magnifying mirrors are concaved inward and work by focusing the light on a point such that the image is larger than the original object.\n\nhttp://physics.bu.edu/py106/notes/Spherical.html
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a double convex lens will magnify, i can't remember which ones reduce size, but i'm guessing some sort of concave lens, and lenses REFRACT light, while mirrors REFLECT light.
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1) its optical centre\n2) 1/2 cm\n3)converges, diverges\n4)perpendicular incidence of light\n5)ciliary muscles
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Magnification is dimensionless\n\nWhat is the focal length of the concave mirror in b\n\nConvex mirror has wider field of view.
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1. a combinatoin of lens is made up of two simple lenses attached together. The lenses are made from glasses with different refractive indices and different amounts ot dispersion. This combination produces a better image than a simple lens. Most commercial doublets are achromats, which are optimized to reduce chromatic aberration while also reducing spherical aberration and other optical aberrations.\n2. i = r =  0\n3. 90\n4. >> Shaving  >> you should put the obiect between the focus and the mirror to have magnified and a virtual image.\n   >> Doctor's mirror >> light to be in the focus to have a parallel beam
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ANYONE WITH A MICROSCOPE AND CAMERA
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A Fresnel lens works just the same as a standard convex lens (or any positive lens).  The only difference is that a Fresnel lens is flat!\n\nThe magnification is related to the focal length of the lens.\n\nHere is a good explanation for calculating the magnification...\nhttp://en.wikipedia.org/wiki/Magnification