A Converging Lens with Two Convex Surfaces Has a Front

question 63

Multiple Choice

A converging lens with two convex surfaces has a front surface with radius of curvature of 10.0 cm;the back surface has radius of curvature of 20.0 cm,and it is made from material with an index of refraction of 2.50.What is the focal length of the lens?

• A)4.44 cm
• B)13.3 cm
• C)-13.3 cm
• D)0.250 cm

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Definitions:

Discount Rate

The financial rate used to convert future cash flows into their present value during a discounted cash flow analysis.

Cash Flows

The overall volume of cash inflows and outflows within a firm, influencing its liquid assets.

Present Value

The value at present of money or cash flows expected in the future, discounted at a particular rate of return.

Interest Rate

The cost of borrowing money or the return on invested funds, typically expressed as a percentage.