The Objective Lens and the Eyepiece of a Microscope Have

question 78

Multiple Choice

The objective lens and the eyepiece of a microscope have focal lengths of 4.0 mm and 25 mm,respectively.The objective produces a real image 30 times the size of the object,with the final image viewed at infinity.The near point of the microscope user is at 25 cm.What is the magnitude of the overall magnification of the microscope?

• A)250
• B)300
• C)350
• D)400
• E)450

---

Definitions:

Marginal Tax Rate

The rate at which your last dollar of income is taxed, indicating the percentage of tax applied to your next dollar of taxable income.

Coupons

The interest payments made to bondholders, typically on an annual or semi-annual basis.

Yield-to-maturity

The total return anticipated on a bond if it is held until the end of its lifetime, taking into account both interest payments and capital gains or losses.

After-tax Rate

The rate of return on an investment after accounting for taxes, giving a more accurate reflection of the actual take-home returns.