A Refracting Astronomical Telescope Has Objective and Eyepiece Lenses of Focal

question 14

Multiple Choice

A refracting astronomical telescope has objective and eyepiece lenses of focal lengths 38 cm and 0.40 cm,respectively.What is the angular magnification of this instrument?

• A) 95
• B) 50
• C) 27
• D) 19.6

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Definitions:

Muscle Fiber

An individual muscle cell, long and cylindrical in shape, that contracts to produce movement.

Myofibrils

Rod-like units of a muscle fiber that are essential for muscle contraction, composed of sarcomeres.

Motor Units

Functional units of a muscle that consist of a motor neuron and all the muscle fibers it innervates.

Gastrocnemius Muscles

A major calf muscle that is involved in walking, running, and jumping by flexing the foot at the ankle.