Question

What are the names given to the three or four lenses attached to the nose-piece, each with different magnification?

Answer 1

The lenses attached to the nosepiece, each with different magnification, are called objective lenses.

Explanation

Objective lenses are the lenses attached to the nosepiece of a microscope, and they come in various magnifications, typically ranging from 4x to 100x or more.

These lenses are crucial components in microscopy, as they determine the level of magnification and clarity of the specimen being observed. The microscope's revolving nosepiece allows users to easily switch between these objective lenses to achieve different levels of magnification.

The term "objective" in this context refers to the lens nearest to the object being observed. Microscopes commonly have three or four objective lenses, and each is labeled with its specific magnification factor. Lower magnifications, such as 4x and 10x, are often used for scanning and initial observations, while higher magnifications, like 40x and 100x, are employed for detailed examination.

This system of multiple objective lenses provides a range of magnification options, enabling scientists, researchers, and students to study specimens with varying levels of detail and precision. Overall, the objective lenses are fundamental to the functionality of a microscope, allowing for the versatile exploration of microscopic worlds.

Answer 2

The names given to the three or four lenses attached to the nose-piece, each with different magnification, are objective lenses.

Step-by-step explanation:

The term "objective lenses" refers to the lenses mounted on the nosepiece of a microscope, and they play a pivotal role in magnifying the specimen being observed. These lenses are characterized by varying magnification powers, typically ranging from 4x to 100x.

The lower magnification lenses (e.g., 4x and 10x) are used for initial scanning and locating the specimen, while the higher magnification lenses (e.g., 40x and 100x) are employed for detailed examination. The total magnification is determined by multiplying the magnification of the objective lens by the magnification of the eyepiece.

For example, if an objective lens with a magnification of 40x is used in conjunction with an eyepiece magnification of 10x, the total magnification is calculated as follows:

`\[ \text{Total Magnification} = \text{Objective Magnification} * \text{Eyepiece Magnification} \]`

`\[ \text{Total Magnification} = 40x * 10x = 400x \]`

Understanding the nomenclature of these lenses is essential for microscopy, as it directly impacts the level of detail and clarity in the observed specimen. The combination of different objective lenses allows for a range of magnification options, providing flexibility in examining specimens at various levels of detail. Therefore, the term "objective lenses" encapsulates the fundamental components responsible for achieving different levels of magnification in a microscope.