A Lens Is Made with a Focal Length of -40

question 79

Multiple Choice

A lens is made with a focal length of -40 cm using a material with index of refraction 1.50.A second lens is made with the SAME GEOMETRY as the first lens,but using a material having refractive index of 2.00.What is the focal length of the second lens?

• A) -40 cm
• B) -80 cm
• C) -53 cm
• D) -20 cm
• E) -30 cm

Calculate the present value of future cash flows at different interest rates.

Understand the impact of interest rate changes on the present value of future cash flows.

Analyze investment decisions using NPV methodology.

Understand the role of vigilant investors in the economy.

---

Definitions:

Primary Research

The process of collecting original data directly from sources through methods like surveys, interviews, or experiments.

Secondary Research

The process of gathering and analyzing existing data collected by others to gain insights or support decision-making.

Internet Search Engines

Web-based tools that allow users to find information on the internet by entering keywords or phrases.

Natural Language Search

A type of search engine ability that allows users to query using natural, conversational language instead of keywords or phrases.