Tripling the Focal Length in a Telephoto Lens,while Keeping the Aperture

question 59

Multiple Choice

Tripling the focal length in a telephoto lens,while keeping the aperture size constant,will change the f-number by what factor?

• A)1/9
• B)1/3
• C)3
• D)9

---

Definitions:

Paying Off Debt

The process of fully repaying borrowed money, including principal and interest, to creditors.

Common Stock

A type of security that represents ownership in a corporation, entitling the holder to vote on corporate matters and receive dividends.

Levered Firm

A company that uses debt financing in addition to equity in its capital structure, amplifying both potential gains and losses.

Call Option

This financial instrument endows the acquirer with the right, without enforcing the responsibility, to buy assets such as stocks, bonds, or commodities at a pre-agreed price during a nominated time interval.