You Have a Choice Between Two Lenses of Focal Lengths

question 82

Multiple Choice

You have a choice between two lenses of focal lengths f_a and f_b,where f_b = 2f_a,to use as the objective lens in building a compound microscope.If the magnification you obtain using lens a is M_a,what will be the magnification when using lens b?

• A)M_b = 2 M_a
• B)M_b = 4 M_a
• C)M_b = 8 M_a
• D)M_b = M_a/4
• E)M_b = M_a/2

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Definitions:

Standard Normal

An ordinary distribution with a 0 mean and a 1 standard deviation.

Random Variable

A variable with numerical outcomes derived from random occurrences.

Standard Normal

Refers to a normal distribution with a mean of 0 and a standard deviation of 1, used as a basis for comparing and standardizing normal distributions.

Random Variable

A variable whose outcomes depend on the results of a random phenomenon.