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The Microscope

Questions on the practical

Number of lenses in a compound microscope two
The diaphragm is used to control.... the amount of light reaching the slide
The eyepiece lens ... magnifies the image ten times
The objective lens... magnifies the image ten times(low power) or forty times(high power)
To find total magnification.. multiply the value on the eyepiece lens by the value on the objective lens
The condenser focuses .... light onto the slide
To hold the slide in place... use the clips
For approximate focusing use... the coarse focus
For precise focusing use... the fine focus
When using a compound microscope the specimen must be .. translucent
Always look for cells under... low power before using high power
When looking through the objective lens move the focus wheel.. upwards
When looking at the objective lens move the focus wheel.. downwards
Created by: PDST Biology