A Thin Lens of Focal Length 20 Cm Is Placed

question 30

Multiple Choice

A thin lens of focal length 20 cm is placed in contact with a 40-diopter thin lens.What is the power of the combined lenses?

• A)1/4 diopter
• B)35.0 diopters
• C)45.0 diopters
• D)80 diopters
• E)​4 diopters

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Definitions:

Mies Van Der Rohe

Ludwig Mies van der Rohe, a pioneering modernist architect known for his minimalist designs and the phrase "less is more."

Spiral Jetty

An earthwork sculpture constructed by Robert Smithson in 1970, located at Rozel Point in the Great Salt Lake, Utah, made from mud, salt crystals, and rocks.

Robert Smithson

An American artist known for his land art and environmental sculptures, most notably for his work "Spiral Jetty" in the Great Salt Lake, Utah.

Great Salt Lake

The largest saltwater lake in the Western Hemisphere, located in the northern part of the U.S. state of Utah.