How Much Must the Focal Length of an Eye Change

question 23

Multiple Choice

How much must the focal length of an eye change when an object,originally at 4.00 m,is brought to 40.0 cm from the eye?

• A)0.13 cm
• B)2.48 cm
• C)2.35 cm
• D)2.50 cm
• E)0.19 cm

---

Definitions:

Fixed Costs Per Unit

Fixed costs per unit decrease as production increases because the total fixed costs are spread over a larger number of units.

Selling Price

The amount of money charged for a product or service, or the sum for which something is sold.

Margin of Safety

The difference between actual sales and the break-even point, indicating how much sales can fall before a business incurs a loss.

Fixed Expenses

Costs that do not vary with the level of production or sales, remaining constant over a period of time.