A Meniscus Lens Is Made with the Radius of Curvature

question 1

Multiple Choice

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

• A)-32 cm
• B)32 cm
• C)113 cm
• D)67.5 cm
• E)-113 cm

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Definitions:

Marginal Revenue Product

Extra profits generated by incorporating another unit of a production element.

Worker

An individual engaged in a particular labor or job to earn a living, contributing to the production process.

MRP

Marginal Revenue Product, an economic theory stating the additional revenue generated from employing one more unit of a factor of production, like labor.

Wage Rate

The amount of money paid per unit of time or per task for labor or services.