Suppose You Wanted to Start a Fire Using a Mirror

question 68

Multiple Choice

Suppose you wanted to start a fire using a mirror to focus sunlight.Which of the following statements is most accurate?

• A)It would be best to use a plane mirror.
• B)It would be best to use a convex mirror.
• C)It would be best to use a concave mirror,with the object to be ignited positioned at the center of curvature of the mirror.
• D)It would be best to use a concave mirror,with the object to be ignited positioned halfway between the mirror and its center of curvature.
• E)One cannot start a fire using a mirror,since mirrors form only virtual images.

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Definitions:

Bonds

Financial instruments issued by governments or corporations to raise funds, representing a loan made by the investor to the issuer.

Money Supply

The combined economic financial resources at a given time in an economy.

Interest Rate

The part of a loan that is added as interest for the borrower, normally expressed as an annual percentage of the existing loan balance.

Reserve Ratio

The reserve ratio is the fraction of total deposits that a bank is required to hold in reserve and not loan out, acting as a regulatory tool to ensure the stability of the banking system.