The Lens Formula Relating the Image Distance, P , to the Focal

question 72

Multiple Choice

The lens formula relating the image distance, p , to the focal length, f , and object distance, s , is
The magnification of a lens is
A magnifying glass with focal length 15 cm is placed 10 cm above a stamp. The image of the stamp is located

• A) 30 cm above the magnifying glass.
• B) 30 cm below the magnifying glass.
• C) 30 cm above the stamp.
• D) 30 cm below the stamp.
• E) 15 cm from the magnifying glass.

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Definitions:

Marginal Physical Product

The additional output that can be produced by adding one more unit of a specific input, while holding other inputs constant.

Additional Output

The extra amount of production generated as a result of increasing inputs or improving efficiency.

Productivity

A measure of the efficiency of production, often expressed as the ratio of outputs to inputs in a production process.

Per Unit

A measurement specific to one unit of a good or service, indicating cost, price, or quantity related to a single unit.