A Converging Lens with Two Convex Surfaces Has a Front

question 15

Multiple Choice

A converging lens with two convex surfaces has a front surface with radius of curvature of 13.1 cm;the back surface has radius of curvature of 16.5 cm,and it is made from material with an index of refraction of 2.10.What is the focal length of the lens?

• A)6.64 cm
• B)57.8 cm
• C)−57.8 cm
• D)3.48 cm
• E)30.3 cm

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Definitions:

CPI Increased

An indication that the Consumer Price Index has risen, signifying a period of inflation where consumer goods and services prices have gone up.

Base Year

A specific year chosen as a reference point for financial or economic data analysis.

Purchasing Power

The amount of goods or services that can be bought with one unit of a currency, showcasing its value.

CPI

An index measuring the variation in price level of a market basket of consumer goods and services purchased by households, frequently used to identify periods of inflation or deflation.