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Test # 55


1.
If the side of a square be increased by 50%, the % increase in area is

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Idiom of the Day

keep time
to keep accurate time (used for a watch or clock)
My old watch will not keep time at all.
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  • Precaution while using Microscope

    Main problem

    Microscopists know how to align their microscope but few align themselves! Many users are slumpers and need training to avoid problems later. Optical or light microscopy involves passing visible light transmitted through or reflected from the sample through a single or multiple lensesto allow a magnified view of the sample.The resulting image can be detected directly by the eye, imaged on a photographic plate orcaptured digitally. The single lens with its attachments, or the system of lenses and imaging equipment, along with the appropriate lighting equipment, sample stage and support, makes up the basic light microscope. The most recent development is the digital microscope, which uses a CCD camera to focus on the exhibit of interest. The image is shown on a computer screen, so eye pieces are unnecessary.


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