Quiz 2 Flashcards

It is used with the scanning objective to locate and focus on an object

A. Course adjustment knob

B. Stage

C. Condenser

D. Fine adjustment knob

E. Iris diaphragm

The ocular lenses are mounted to the nose piece and have variable magnifications.

A. True

B. False

Collects and focuses the light from the illuminator onto the slide

A. Objective Lens

B. Ocular Lens

C. Condenser Lens

D. Iris Lens

E. Adjustment Lens

The body is the broad flat portion that supports the microscope.

A. True

B. False

Which of the following terms refers to the ability of a lens to clearly distinguish adjacent objects as separate?

A. Resolution

B. Magnification

C. Wavelength

D. Parfocal

E. Focal Plane

It contains the ON/OFF switch, the voltage regulator, and the illuminator besides being the main support of the microscope.

A. Iris Diaphragm

B. Stage

C. Condenser

D. Base

E. Arm

It is usually 10X although other powers are occasionally used.

A. Objective lens

B. Ocular Lens

C. Condenser lens

D. Iris lens

E. Adjustment lens

When using a microscope, the following rule should NOT be followed?

A. Carry the microscope with two hands, one on the arm and the other on the base.

B. Use the course adjustment knob when focusing with higher power objectives

C. Store the microscope with the cord wrapped neatly around the base, with the lowest power lens in position

D. Completely unwrap the electrical cord before plugging in the microscope.

E. Use lens paper to clean the lens

The amount of a specimen that is in focus at any given time is called the __________.

A. Field diameter

B. Depth of field

C. Parfocal

D. Field of view

E. Working distance

It controls the amount of light passing from the light source to the slide

A. Iris Diaphragm

B. Stage

C. Condenser

D. Base

E. Arm

If the field of view is too bright, the light intensity can be lowered by turning the fine adjustment knob.

A. True

B. False

At higher magnification the light intensity should be decreased so that the image will have good contrast.

A. True

B. False

If a student is using the 40X lens, what is the total magnification of the image being viewed?

A. 14X

B. 40X

C. 140X

D. 4000X

E. 400X

It is used for focusing on the higher powers.

A. Course adjustment knob

B. Stage

C. Condenser

D. Fine Adjustment knob

E. Iris diaphragm

Which of the following terms is mismatched?

A. Magnification - the amount an specimen can be enlarged.

B. Field of view - bending of light as it passes through substances of different densities.

C. Parfocal - lens design that allows specimens to remain near focused at different magnification powers.

D. Compound microscope - microscope that uses more than one lens to direct light through a specimen mounted on a glass slide.

E. Working distance - distance between the tip of the objective lens and the upper surface of the slide, with the specimen in focus

The horizontal platform that supports the microscope slide is the

A. Iris diaphragm

B. Stage

C. Condenser

D. Base

E. Arm

Upon initial observation of a specimen, it is best to start with the highest magnification lens in place.

A. True

B. False

The field diameter is larger at lower magnification than at higher magnification.

A. True

B. False

When using a microscope, the following rule should NOT be followed.

A. Carry the microscope with two hands, one on the arm and the other on the base.

B. Completely unwrap the electrical cord before plugging in the microscope.

C. Clean the microscope with any soft cloth or tissue and water.

D. Store the microscope with the cord wrapped neatly around the base, with the lowest power lens in position.

E. Do not use the coarse adjustment when focusing with the higher power objectives.

They are mounted on a revolving nose-piece or turret.

A. Objective lenses

B. Ocular Lenses

C. Condenser lenses

D. Iris lenses

E. Adjustment lenses