Condenser, Diaphragm and Eye piece

Which part of the compound microscope helps in gathering and focusing light rays on the specimen to be viewed?

• Eye piece lens

• Objective lens

• Condenser lens

• Diaphragm lens

Which part of the light microscope controls the intensity of light entering the viewing area?

• Coarse adjustment screw

• Fine adjustment screw

• Diaphragm

• Condenser lens

Which of the following is true about a microscope condenser?

• Gather light from the source and concentrate them into a cone

• Illuminating the specimen

• Can be adjusted to optimize the intensity and angle of light

• All of the above

Which microscope lens does not magnify the imaged formed?

• magnetic lens

• ocular lens

• objective lens

• condenser lens

• none of the above

What happens when you increase the numerical aperture of the condenser in a microscope?

• The image becomes brighter

• The depth of field decreases

• The magnification increases

• The resolution improves

If you want to examine a transparent specimen under a microscope, which type of condenser setting should you use?

• High numerical aperture (NA)

• Low numerical aperture (NA)

• No condenser

• Both high and low numerical aperture

When the condenser is set to a lower position in a microscope, what effect does it have on the illumination of the specimen?

• The specimen is over-illuminated

• The specimen is under-illuminated

• The specimen is evenly -illuminated.

• The specimen is well illuminated

What is the most commonly used condenser in traditional brightfield microscopy?

• Abbe condenser

• Achromatic condenser

• Aplanatic condenser

• Universals condenser

Which type of condenser is considered the most highly corrected and precise for transmitted light microscopy?

• Abbe condenser

• Aplanatic condenser

• Achromatic condenser

• Aplanatic-achromatic condenser

An apochromatic condenser is designed to correct for

• Spherical aberration

• Astigmatism

• Field curvature

• Chromatic aberration