Question

what is the advantage of starting with the 4x objective before moving to the 10x and then the 40x objective?

the field of view is easier to focus.

the field of view is larger.

the field of view is larger, and it is easier to focus.

Explanation:

Analyze the properties of low-power objectives

Lower magnification objectives (like \(4\text{X}\)) provide a wider field of view, allowing the user to locate the specimen easily on the slide.

Analyze the depth of field and focusing

Lower magnification objectives have a larger depth of field, which makes finding the initial focal plane much easier and faster using the coarse adjustment knob.

Evaluate the given options

Starting with the \(4\text{X}\) objective combines both advantages: it provides a larger field of view to locate the specimen and makes it much easier to bring the specimen into focus before switching to higher magnifications.

Answer:

• The field of view is easier to focus.
• The field of view is larger.
• The field of view is larger, and it is easier to focus. (Correct answer)