INTRODUCTION
MICROSCOPE PARTS MAGNIFICATION RESOLUTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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only
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and (2) only
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and (3) only
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and (3) only
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Detailed explanation-1: -Iris Diaphragm controls the amount of light reaching the specimen. It is located above the condenser and below the stage.
Detailed explanation-2: -Iris Diaphragm: A rotating disc under the stage that controls the intensity of light hitting the specimen.
Detailed explanation-3: -Brightness is related to the illumination system and can be changed by changing the voltage to the lamp (rheostat) and adjusting the condenser and diaphragm/pinhole apertures. Brightness is also related to the numerical aperture of the objective lens (the larger the numerical aperture, the brighter the image).
Detailed explanation-4: -Look through the eyepiece (1) and move the focus knob until the image comes into focus. Adjust the condenser (7) and light intensity for the greatest amount of light.
Detailed explanation-5: -The microscope rheostat control can be found on the side of the compound microscope body. It will typically be a knob that is turned clockwise in order to increase the light intensity, or counter-clockwise to reduce the light.