Description : One can buy cheap microscope for use of children. The images seen in such microscope have colored edges, why is this so?
Last Answer : Ans. The images in microscope have colored edges because of defects in lenses. Such a defect is known as chromatic aberration. In such a problem, a lens can’t bring all rays of white light to a single point on image. So image is not sharp and has colored edges.
Description : If a person looking through microscope at the full moon, how would the appearance of moon be changed by covering of objective lens?
Last Answer : Ans. He will observe the full image but its brightness will be reduced. In other word, the intensity of light will decreased.
Description : How the light signal is transmitted through the fiber?
Last Answer : Ans. There are three major parts: 1. Transmitter: it converts electrical signal into light signals 2. Optical fiber: it carries the signal from one place to another 3. Receiver: it converts light signal into ... represented by 0 . Any information can be represented by the pattern of 1's and 0's.
Description : Explain the difference between the angular magnification and resolving power of optical instrument. What limits the magnification of an optical instrument?
Last Answer : Angular magnification: The ratio of the angle subtended by the image as seen through the optical device to that subtended by the object at the un-aided eye Resolving Power: It is the ... object under examination. The magnification of an optical instrument is limited due to defects in lenses.
Description : What do you understand by linear magnification and angular magnification? Explain how a convex lens is used as a magnifier?
Last Answer : Linear Magnification: The ratio of the size of image to the size of object is called linear magnification. Angular magnification: The ratio of the angle subtended by the image as seen through the optical ... lens used as a magnifier when an object is brought within the focal length of convex lens.
Description : What is a compound microscope? (1) A microscope that has one lens. (2) A microscope that has two sets of lenses : an occular lens and an eyepiece. (3) A microscope whose lenses are concave. (4) A microscope whose lenses are convex.
Last Answer : (2) A microscope that has two sets of lenses : an occular lens and an eyepiece. Explanation: A compound microscope is a microscope which uses multiple lenses to collect light from the ... lens provides the primary magnification which is compounded (multiplied) by the ocular lens (eyepiece).
Description : The instrument used to see the distant objects on the Earth is – (1) Terrestrial telescope (2) Astronomical telescope (3) Compound microscope (4) Simple microscope
Last Answer : (1) Terrestrial telescope Explanation: A telescope assists the eye chiefly in two way by enlarging the visual angle under which a distant object is seen, and thus magnifying that object; ... organ, thus rendering objects distinct and visible which would otherwise be indistinct and or invisible.
Last Answer : A microscope that has two sets of lenses : an occular lens and an eyepiece.
Description : The instrument used to see the distant objects on the Earth is (1) Terrestrial telescope (2) Astronomical telescope (3) Compound microscope (4) Simple microscope
Last Answer : Terrestrial telescope
Description : Do blue lights give better resolution than white light on a microscope?
Last Answer : Feel Free to Answer
Description : A student wishes to study the cell structure under a light microscope having 10X eyepiece and 45X objective. He should illuminate the object by which one of the following colours of light so as to get the best possible resolution? (a) Blue (b) Green (c) Yellow (d) Red
Last Answer : (a) Blue
Description : What is the magnification limit of a compound light microscope?
Description : An electron microscope gives higher magnification than an optical microscope, because: (1) It uses more powerful lenses (2) the velocity of electron is smaller than that of visible (3) the ... particles (4) the wavelength of electrons is smaller as compared to the wavelength of visible light
Last Answer : (4) the wavelength of electrons is smaller as compared to the wavelength of visible light Explanation: An electron microscope uses a beam of electrons to illuminate a specimen and produce a ... photons. Magnification is the process of enlarging something only in appearance, not in physical size.
Description : An electron microscope gives higher magnifications than an optical microscope because - (1) The velocity of electrons is smaller than that of light (2) The wavelength of electrons is smaller as ... have more energy than the light particulars (4) The electron microscope uses more powerful lenses
Last Answer : (2) The wavelength of electrons is smaller as compared to the wavelength of visible light Explanation: An electron microscope is a microscope that uses a beam of accelerated electrons as a spume ... a higher resolving power than a light microscope and can reveal the structure of smaller objects.
Description : Which one of the following instruments is used to study dispersion of light? (1) Microscope (2) Telescope (3) Spectrometer (4) Photometer
Last Answer : (3) Spectrometer Explanation: Dispersion occurs when different frequencies of light have different phase velocities, due either to material properties (material dispersion) or to the geometry ... portion of the electromagnetic spectrum, typically used in spectroscopic analysis to identify materials.
Description : Which of the following scientific instruments has the greatest resolving power? w) electron microscope x) light microscope y) phase-contrast microscope z) centrifuge
Last Answer : ANSWER: W -- ELECTRON MICROSCOPE
Description : An electron microscope gives higher magnifications than an optical microscope because : (1) The velocity of electrons is smaller than that of light (2) The wavelength of electrons is smaller as ... have more energy than the light particulars (4) The electron microscope uses more powerful lenses
Last Answer : The wavelength of electrons is smaller as compared to the wavelength of visible light
Description : Which one of the following instruments is used to study dispersion of light ? (1) Microscope (2) Telescope (3) Spectrometer (4) Photometer
Last Answer : Spectrometer
Description : An electron microscope gives higher magnification than an optical microscope, because : (1) it uses more powerful lenses (2) the velocity of electron is smaller than that of visible light (3) ... particles (4) the wavelength of electrons is smaller as compared to the wavelength of visible light
Last Answer : the wavelength of electrons is smaller as compared to the wavelength of visible light
Description : Why are stains such as methylene blue and iodine solution used when observeing cells under the microscope?
Last Answer : What is the answer ?
Description : In a compound microscope, how is the intermediate image? -Do You Know?
Last Answer : answer:
Description : What is the English of compound microscope ?
Last Answer : English compound mircroscope of compound microscope .
Description : Where can I find a compound microscope for a reasonable price?
Last Answer : Try microscope.com, they have a large selection and great technical support. You might try checking out Nova Tech, they have VanGuard Microscopes for great prices. APE-BridgePath Scientific is a local (Frederick, MD) that has used microscopes. I think they even offer warranties.
Description : In a compound microscope, how is the intermediate image?
Last Answer : Real, inverted and magnified
Description : Magnification of compound microscope is not connected with (a) numerical aperture (b) focal length of objective (c) focal length of eye piece (d) tube length.
Last Answer : (a) numerical aperture
Description : Other than electrons, what else can you magnify and view with an electron microscope?
Last Answer : My Paycheck
Description : What is the function of microscope ?
Last Answer : The function of a microscope is to magnify small objects.
Description : What is a microscope ?
Last Answer : An instrument that allows a small object to be magnified many times over is called a microscope.
Description : How should a man wearing spectacles work with a microscope?
Last Answer : – He should keep on wearing spectacles
Description : How can one can distinguish a telescope from a microscope?
Last Answer : – By observing size of the lens
Description : A microscope used in pathological laboratories forms – (1) magnified, virtual, erect, Image (2) diminished, real and erect image (3) Magnified, virtual and inverted image (4) Diminished, virtual and erect image
Last Answer : (3) Magnified, virtual and inverted image Explanation: A microscope is an instrument that produces a clear magnified image of an object viewed through it. A basic microscope is made up of two ... one a viewer sees. The final image is virtual and is inverted compared to the original object.
Description : What is viewed through an electron microscope? (1) Electrons and other elementary particles (2) Structure of bacteria and viruses (3) Inside of human stomach (4) Inside of the human eye
Last Answer : (2) Structure of bacteria and viruses Explanation: Electron microscopes are used to observe a wide range of biological and inorganic specimens including microorganisms, cells, large molecules, ... microscope because electrons have wavelengths about 100,000 times shorter than visible light photons.
Description : Electron microscope was invented by – (1) Knoll and Ruska (2) Robert. Koch (3) Lecuwenhock (4) C.P. Swanson
Last Answer : (1) Knoll and Ruska Explanation: It is widely accepted that the first prototype of an electron microscope was built by Ernst Ruska and Max Knoll in 1931; it was not more powerful than an ... . An electron microscope uses a beam of electrons to illuminate a specimen and produce a magnified image.
Description : A simple microscope consists of : (1) a short focus convex lens (2) a long focus convex lens (3) a short focus concave lens (4) a long focus concave lens
Last Answer : (1) a short focus convex lens Explanation: Simple microscope - light microscope consisting of a short focus single convex lens is used to produce an enlarged image. The magnifying glass was ... object viewed and one lens, increasing the visibility of the object by some amount (magnification).
Description : One can distinguish a telescope from a microscope by observing – (1) length (2) colour (3) size of the lens (4) length and size of the lens
Last Answer : (4) length and size of the lens Explanation: Telescope and Microscope are two scientific instruments that serve their purposes differently. One of the main differences between a telescope and a ... the distance from the focal point to the lens is different in these two scientific instruments.
Description : The final image in a simple microscope is – (1) real, diminished and inverted (2) real, magnified and erect (3) virtual, magnified and erect (4) virtual, diminished and erect
Last Answer : (3) virtual, magnified and erect Explanation: A basic microscope is made up of two converging lenses. The first lens creates a real image which serves as the object for the second lens, and the ... a viewer sees. The final image is magnified, virtual and is inverted compared to the original object.
Description : What was invented by 'Zacharias Janssen'? (1) Telescope (2) Microscope (3) Stethoscope (4) Periscope
Last Answer : (2) Microscope Explanation: In Boreel's investigation Johannes also claimed his father, Zacharias Jansen, invented the compound microscope in 1590.
Description : The final image in a simple microscope is (1) real, diminished and inverted (2) real, magnified and erect (3) virtual, magnified and erect (4) virtual, diminished and erect
Last Answer : virtual, magnified and erect
Description : A microscope used in pathological laboratories forms (1) magnified, virtual, erect image (2) diminished, real and erect image (3) magnified, virtual and inverted image (4) diminished, virtual and erect image
Last Answer : magnified, virtual and inverted image
Description : One can distinguish a telescope from a microscope by observing (1) length (2) colour (3) size of the lens (4) length and size of the lens
Last Answer : length and size of the lens
Last Answer : a short focus convex lens
Description : Electron microscope was invented by (1) Knoll and Ruska (2) Robert Koch (3) Leeuwenhock (4) C.P. Swanson
Last Answer : Knoll and Ruska
Last Answer : Structure of bacteria and viruses
Description : If you wanted to study the surface of a bacterial cell, you would use a. A transmission electron microscope. b. A light microscope with phase-contrast optics. c. A scanning electron microscope. d. A light microscope with dark-field optics.
Last Answer : c. A scanning electron microscope.
Description : If you wanted to study bacterial motility you would most likely use a. A transmission electron microscope. b. A tight microscope with dark-field optics. c. A scanning electron microscope. d. A light microscope with phase-contrast optics.
Last Answer : a. A transmission electron microscope.
Description : With the right light can you turn the lens in your eye into a microscope?
Last Answer : I think you turned your eye into a pinhole camera! When using my DSLR as a pinhole, dust on the sensor becomes very crisp, I think a similar thing happened with your eye. Because the light was shining ... opening, you got very crisp shadows of the floaters. I'm going to have to try this now =)
Description : What is the drawback of a light microscope?
Last Answer : Need answer
Description : When observing the fungus under the light microscope the stundent stated that chloroplasts were present.do you think that the student observation was correct?
Last Answer : The student's observation was not correct: fungi have nochloroplasts, plants do.
Description : What is the difference between a Light Microscopes and an Electron Microscope?
Last Answer : The optical microscope is the most common. It uses light to image a sample that is too small to be seen by the naked eye.The scanning electron microscope examines the surface of objects using an electron beam and measuring reflection.Short Answer = Resolution.
Description : What is the difference between how a light microscope magnifies an image and how an electron microscope magnifies an image?