The __________ is the distance between the center of a lens and the point at which it focuses parallel beams of light.
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Q5: The _ is the point at which
Q6: A substage condenser is used to focus
Q7: A light microscope with an objective lens
Q8: The useful magnification of a light microscope
Q9: Immersion oil increases the amount of light
Q11: Immersion oil is used to prevent a
Q12: A 30* objective and a 20* ocular
Q13: Light rays are refracted (bent)when they cross
Q14: Resolution improves when the wavelength of the
Q15: It is possible to build a light
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