A Meniscus Lens Is Made with the Radius of Curvature

question 60

Multiple Choice

A meniscus lens is made with the radius of curvature of the convex surface being 45.0 cm and the concave surface 25.0 cm. If the glass used has index of refraction 1.50, what is the focal length of this lens?

• A)32 cm
• B)113 cm
• C)25.0 cm
• D)-32 cm
• E)-113 cm

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Definitions:

Weighted-Average Method

A costing method that calculates the cost per unit by dividing the total cost by the total number of units produced, treating all units as equal regardless of when they were actually manufactured.

Assembly Department

A division in a manufacturing plant where components are joined together to form a finished product.

Equivalent Units

A concept in cost accounting used to allocate costs to partially completed goods, adjusting for the portion of those goods that is complete.

Process Costing

An accounting method used to allocate costs to units of output in industries where production is continuous and units are indistinguishable from each other.