The Angular Magnification of a Refracting Telescope Is 40

question 79

Multiple Choice

The angular magnification of a refracting telescope is 40.When the object and final image are both at infinity,the distance between the eyepiece and the objective is 143.5 cm.The telescope is used to view a distant radio tower.The real image of the tower,formed by the objective,is 6.0 mm in height.The focal point of the eyepiece is positioned at the real image.What is the focal length of the objective lens?

• A)138 cm
• B)139 cm
• C)140 cm
• D)141 cm

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Definitions:

Ansa Cervicalis

A loop of nerves in the neck that innervates some of the muscles responsible for swallowing.

Muscles of Mastication

The muscles responsible for jaw movement, allowing for chewing and biting of food.

Zygomatic Arch

The bone structure that forms the prominence of the cheek, extending from the zygomatic process of the temporal bone to the zygomatic bone.

Facial Nerve

The seventh cranial nerve that controls the muscles of facial expression, among other functions.