What Color Is The 4x Objective?

Color the 4X

objective black

. The second objective is the low-power objective (F), which is almost always made to produce a magnification of 10 times (10X). Color the low-power objective purple.

What is the 4X objective lens called?

The 4X lens is called

the scanning or low power lens

. It has the widest field of view, allowing you to look at large parts of the specimen, and the greatest depth of field. The 10X lens is sometimes called medium power because it produces mid-range magnification.

Is the 4X objective red?

The most commonly used magnifications and corresponding band colors are as follows: black means 1-1.5x, brown means 2x or 2.5x,

red means 4x or

5x, yellow means 10x, green means 16x or 20x, turquoise means 25x or 32x, light blue means 40x or 50x, bright blue means 60x or 63x and white or off-white means 100-250x.

What color is the high power objective lens?

What are the color codes of the objective lenses?

An international color code has been devised to make it easy to identify the magnification of an objective lens. A colored stripe that corresponds to this code encircles modern objective lenses. The code is

black= 1X, brown= 2X, red= 4X, yellow= 10X, green= 20X, light blue= 40X, dark blue= 63X, and white= 100X

.

What are the 3 objective lenses?

Most compound microscopes come with interchangeable lenses known as objective lenses. Objective lenses come in various magnification powers, with the most common being

4x, 10x, 40x, and 100x

, also known as scanning, low power, high power, and (typically) oil immersion objectives, respectively.

What is the shortest objective called?

After the light has passed through the specimen, it enters the objective lens (often called “objective” for short). The shortest of the three objectives is

the scanning-power objective lens (N)

, and has a power of 4X.

What is LPO and HPO?

Low Power Objective (LPO)

has a magnifying power of 10x which means that the specimen is 10x magnified when it is viewed under the microscope. Meanwhile, HPO (High Power Objective) has a magnification of 40x which means that, the specimen viewed under the microscope is magnified 40x.

Which objective lens should be used first?

When focusing on a slide, ALWAYS start with either

the 4X or 10X objective

. Once you have the object in focus, then switch to the next higher power objective.

What can you see with 40x magnification?

• At 40x magnification you will be able to see 5mm.
• At 100x magnification you will be able to see 2mm.
• At 400x magnification you will be able to see 0.45mm, or 450 microns.
• At 1000x magnification you will be able to see 0.180mm, or 180 microns.

What objective lens is the longest?

The longest objective lens is

an oil immersion objective lens

, which magnifies 100x. The total magnification is 1000x if the eyepiece lens is 10x power. The oil immersion objective lens is used for examining the detail of individual cells, such as red blood cells.

Which objectives are dry lenses?

A dry objective is

one that works with the air between the specimen and the objective lens

. An immersion objective requires a liquid, usually a transparent oil of the same R.I. as glass, to occupy the space between the object and the front element of the…

What magnification is the yellow objective lens?

Color Coded Objectives

The yellow band tells us that it is a

10x

objective lens. Red is 4x, Blue is 40x and White is 100x. The first number “10” is the power (10X).

What is a plan Apochromat?

Objectives that have flat-field correction and low distortion are called

plan

achromats,

plan

fluorites, or

plan apochromats

, depending upon their degree of residual aberration. Such correction, although expensive, is quite valuable in digital imaging and conventional photomicrography.

What is the working distance for a 4x objective lens?

Under what magnification was the sequence of colors most clearly seen?

The sequence of colors is most clearly seen using the

10X objective

(100X total magnification).