Below are diagrams of a cell organelle obtained from different organs of an animal. Give reasons for carrying out the following procedures when preparing temporary wet mounts of plant tissues. The diagram below represents a nucleus. If the image and the object are both in the same physical medium (e.g., water, air or outer space), then the lateral magnification formula is the size of the image divided by the size of the object: Here M is the magnification, i is the image height and o is the object height. \( m = \frac{h_i}{h_o} = \frac{v}{u} \) Where, m= magnification. The figure below is a fine structure of a generalized animal cell as seen under an electron microscope. Georgia State University Hyperphysics: Image Formation by Lenses, LibreTexts Physics: Image Formation by Lenses, University of Plymouth Physics: The Lens Equation. Their counterparts in the optical world are concave lenses, or those that are curved inward and bend light rays differently than convex lenses. You measure the observables and use an appropriate formula to calculate the magnification required. (b) Formation of lysosomes. (a) State two advantages of using a coverslip when preparing a specimen for observation under a light microscope. Calculating magnification in telescopes uses a different equation than calculating magnifiction in microscopes. Linear magnification refers to one of the properties of convex lenses, or those that show an outward curvature, like a sphere that has been severely flattened. (b) Mitochondrion; 21. (a) Objective lens How to Calculate Linear Magnification Principles of Image Magnification. (c) State two main functions of the vacuole in the amoeba. Plant cells do not burst when immersed in distilled water. 20. (b) Mitochondrion. (a) Neurone. State the function of the following cell organelles. A virtual image, on the other hand, appears on the same side of the lens as the object and is not associated with a negative sign in pertinent equations. © 2020 Tutorke Limited. Name the organelle in which protein synthesis takes place. (b) State the function of the part labeled C. State the functions of the following parts of a light microscope. 2.1.5 Calculate linear magnification of drawings and the actual size of specimens in images ofknown magnification Using a scale bar: The image at right is of a virus-like particle. Longitudinal magnification denotes the factor by which an… Other articles where Linear magnification is discussed: magnification: Linear (sometimes called lateral or transverse) magnification refers to the ratio of image length to object length measured in planes that are perpendicular to the optical axis. (b) Golgi apparatus. Explain. Detailed Method 1. Lenses may be convex, concave or a combination. (b) Give a reason why staining is necessary when preparing specimens for observation under the microscope. The lens formula in physics relates the focal length of an image formed by a thin lens, the distance of the image from the center of the lens, and the distance of the object from the center of the lens. (b) Name the plant cell organelle: If you have two lenses lined up in front of an object, it's... 2. johnmulu answered the question on April 27, 2017 at 13:28. 2.1.5 Calculate linear magnification of drawings and the actual size of specimens in images ofknown magnification Using a scale bar: The image … It is also given in terms of image distance and object distance. (iii) With reference to the nucleus, state one difference between an animal and a bacterial cell. (b) Adding water on the plant section. State two functions of the endoplasmic reticulum. (a) (i) Name the cell. (a) Skeletal muscle cell Explain. You can experiment with different numbers here to gain a sense of how altering the physical set-up affects the optical results in this type of problem. (b) State two ways in which the cell is structurally adapted to its function. Find the distance between the lenses and the object. (i) For each organelle, state an organ in the urinary system where it is likely to be found. (a) Name the part of a light microscope used to bring an image of a specimen into sharp focus. 8. Microscopes, binoculars and telescopes all magnify things using the special tricks embedded in the nature of light-transducing lenses in a variety of shapes.