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:

Chitin

A long-chain polymer of N-acetylglucosamine, a derivative of glucose, found in the exoskeletons of arthropods and cell walls of fungi.

Cellulose

A complex carbohydrate that is the primary component of plant cell walls, providing structural support.

Euglenoids

A diverse group of unicellular protists characterized by their ability to move via flagella and photosynthesize like plants.

Pseudopodia

Pseudopodia are temporary, amoeba-like projections of the cell membrane used by some cells for movement and feeding.