Tan's Face Is 20 Cm in Front of a Concave

question 165

Multiple Choice

Tan's face is 20 cm in front of a concave shaving mirror. If he observes his image to be twice as big and upright, what is the focal length of the mirror?

• A) 40 cm
• B) 10 cm
• C) -50 cm
• D) 50 cm
• E) -40 cm

---

Definitions:

Withdraw

The act of removing funds from an account, investment, or deposit.

Growing Annuity

Cash operations expanding regularly across a set number of intervals.

Cash Flow Growth Rate

The speed at which a firm's cash flow grows within a defined timeframe.

Required Rate

The minimum return that investors expect to earn from an investment to compensate for its risk.