Halving the Focal Length of a Telephoto Lens,while Holding Aperture

question 8

Multiple Choice

Halving the focal length of a telephoto lens,while holding aperture size constant,will change the light intensity admitted to the film by what factor?

• A) 0.50
• B) 2.0
• C) 0.25
• D) 4.0

---

Definitions:

Government Budget Deficit

A financial situation where a government's expenditures exceed its revenues in a given fiscal period, leading to borrowing or debt accumulation.

Political Reforms

Changes introduced to the political system of a country or region aimed at improving governance, enhancing democracy, and addressing flaws in the existing structure.

Interest Rate

The percentage of a sum of money charged for its use, often expressed as an annual rate.

Exchange Rate

The value of one currency expressed in terms of another currency, used to determine how much of one currency can be exchanged for another.