An Astronomical Refracting Telescope Is Made from Two Lenses $262 \mathrm {~cm}$

question 59

Multiple Choice

An astronomical refracting telescope is made from two lenses. The objective lens has a focal length of 114 cm, and the eyepiece lens has a focal length of 17.0 cm.
(a) What is the total length of the telescope?
(b) What is the angular magnification of the telescope?
(c) What is the magnification by turning the telescope around and looking through the objective
Lens first?

• A) (a) \(262 \mathrm {~cm}\)
• (b) \(0.87\)
• (c) \(1.15\)
• B) (a) \(131 \mathrm {~cm}\)
• (b) \(6.71\)
• (c) \(0.15\)
• C) (a) \(194 \mathrm {~cm}\)
• (b) \(1.18\)
• (c) \(0.85\)
• D) (a) \(97 \mathrm {~cm}\)
• (b) \(0.15\)
• (c) \(6.71\)

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Definitions:

Class Rank

A measure that indicates a student's academic performance relative to their peers, often used for college admissions or award determinations.

Frequency Distribution

An arrangement of data that shows how often each value in a dataset occurs.

Pie Chart

A graphical representation of data that divides a whole into slices to illustrate numerical proportion.

Total Percentages

The sum of all percentage values in a given data set, which should ideally equal 100% if they are exhaustive and mutually exclusive categories.