water for tank 2=1.35 2. What is the focal length of the lens used in section 1.3 “Focal Length” of your manual? Can you deduce from the image seen‚ if the lens used was converging or diverging? The focal length of the lens used is calculated to be 31 mm. The lens used in the experiment was a converging lens as the image was 3. Calculate the focal length of the given converging lens based on the measurements of s and s ’ and thin lens equation. Tabulate your results (for all the three trials)
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small plane mirror and wooden clamp Convex lens and holder. two mounted pins‚ metre rule or optical bench. Method: Place a mounted pin at a distance from the convex lens greater than the focal length so that a real image of the pin is produced. Locate this image by means of the second pin. Place the convex mirror between this second pin and the lens and adjust its position until the light reflected from the mirror passes back through the lens and forms an image coincident with the object
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are perceived by the eye and the lens is the part that makes this possible. Objects which are close to the eye are seen by the eyes’s lens becoming thicker and more bulbous in order to create a lens with a higher refractive index for detailed sight‚ i.e. for close work like sewing . The CILIARY MUSCLE contracts‚ pulling the Ciliary process and Choroid towards the lens. Tension is therefore released ob both the SUSPENSORY LIGAMENTS and the lens and this makes the lens able to focus the light rays
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ILALA BOMA CPA REVIEW CLASS P.20 ABDULKARIM T.KISUGURU THEORETICAL FRAMEWORK OF ACCOUNTING THEORIES INTRODUCTION In this topic we consider various theories of financial accounting. Perhaps‚ therefore‚ we should start by considering what we mean by a ‘theory’. Theory.‚ which has a Greek root‚ .Theoria. meaning to .behold or view.. A popular definition given by Kerlinger defines theory as .a set of interrelated constructs (concepts)‚ definitions and propositions that present a systematic view
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magnification on a microscope? Answer: The shortest lens is the scanning objective; you use it to locate the object on the slide. The medium-length lens is the low-power objective. The longest lens is the high-power objective. Multiplying the power of the eyepiece lens and the nose piece lens gives you the total number of times an object will magnified. (4 points) Score 2. Explain how to focus a microscope using the high power lens. Include any safety issues you need to be aware of.
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There are 3 main parts of the microscope such as illuminating parts‚ magnifying parts and mechanical parts. The sub-parts in illuminating parts are electric lamp and iris diaphragm while the sub-parts of magnifying parts are eyepiece and objective lens. The mechanical parts consist of most sub-parts among these three such as barrel‚ arm‚ stage‚ coarse focus knob‚ fine focus knob and base. Figure 1 : Fully Assembled Optical Microscope. Illuminating
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the following orientations of the letter would the viewer see? b p q d Question 6 of 25 Which of the following procedures should be done just prior to adjusting the diopter‚ when using the compound microscope? Clean all lenses with lens paper Turn the light on Adjust the iris diaphragm Adjust the fine focus Question 7 of 25 Two parts of the microscope that regulate the amount of light visible through the ocular are the: fine and coarse adjustment knobs ocular and
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distance of its images‚ di ‚ and the focal length‚ f‚ of a spherical mirror. In symbols: + = LENSES One of the most useful and simplest optical devices we have. Types of Lenses: a. Concave Lens – The rays are diverged by the lens‚ thus calling it a diverging lens b. Convex Lens – are designed so that parallel rays cross
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And that determines what kind of lens the optometrist will work with. What are the eye conditions? If seeing: * Light rays Light rays Retina Retina Retina Retina Light rays Light rays Focal point Focal point Far blurry objects (near-sightedness) use spherical corrective lenses with negative power. EYE EYE (Near-sightedness) correction (Near-sightedness) correction Negative spherical lens Negative spherical lens Focal
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Microscope | | 1. | Use various internet resources to write the term that matches each meaning below:Used as a handle to carry microscope = | | 2. | Lenses attached to the nosepiece | | 3. | Concentrates light on the object | | 4. | Lens you look through | | 5. | Platform on which slides are placed | | 6. | Rotates to change objectives | | 7. | The shortest objective | | 8. | The longest objective | | 9. | Control knob used for sharp focus | | 10. | Control
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