Life Science- Microscope

Question 1

Eyepiece (ocular)

Answer 1

Contains lenses to magnify the specimen under observation.

Question 2

Tube

Answer 2

Holds lenses of the eyepiece and objectives at the correct working distance apart.

Question 3

Coarse adjustment screw

Answer 3

Moves tube auto and down to locate the object being observed.

Question 4

Fine adjustment screw

Answer 4

Used for the final focus to get a clear image.

Question 5

Arm

Answer 5

Joins the base and stage to the tube and supports the adjustment screws.

Question 6

Rotating nosepiece

Answer 6

Holds the objectives with low and high-power lenses on a rotating disc.

Question 7

Objectives

Answer 7

Lenses help to enlarge the image.
Short one gives a lower magnification (4x).
Longer one gives a higher magnification (10x and 40x).

Question 8

Stage

Answer 8

Supports slide over the opening which transmits light from the mirror or electric light source below.

Question 9

Clamp

Answer 9

Holds slid in position.

Question 10

Diaphragm and condenser

Answer 10

Controls the amount of light directed onto and passing through the object. Focuses the light rays from the mirror onto the object.

Question 11

Mirror or electric light source

Answer 11

Reflects light upwards through the condenser towards the opening in the stage.

Question 12

Base

Answer 12

Firm and supports the weight of the microscope.