Which of the Following Best Describes What We Mean by the Focal

question 55

Multiple Choice

Which of the following best describes what we mean by the focal plane of a telescope?

• A)It is the upper surface of the telescope's primary lens or mirror.
• B)It is the place where,if we mounted film or an electronic detector,we could get a clear (not blurry)image of an object viewed through the telescope.
• C)It is the lower surface of the telescope's primary lens or mirror.
• D)It is the surface of the lens on the eyepiece,through which you would look to see objects in the telescope's field of view.

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Definitions:

Trimester

One of three divisions into which the duration of pregnancy is often divided, each lasting approximately three months.

Fetus

An unborn offspring in its later stages of development, especially after it has assumed the recognizable form of its species.

Second Trimester

The middle period of pregnancy, often considered from the 13th to the 26th week.

Edema

Swelling caused by excessive fluid accumulation in body tissues, often seen in limbs, abdomen, or facial areas.