Ansel Places an Object 23

question 70

Multiple Choice

Ansel places an object 23.0 cm from a thin convex lens along the axis.If a real image forms at a distance of 14.0 cm from the lens,what is the focal length of the lens?

• A) 23.0 cm
• B) 35.8 cm
• C) 14.0 cm
• D) 8.70 cm
• E) ​9.0 cm

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Definitions:

Mean (μ)

The mathematical average of a set of numbers, calculated by adding all the numbers together and then dividing by the count of those numbers.

Standard Deviation (σ)

A measure of the amount of variation or dispersion of a set of values; a low standard deviation indicates that the values tend to be close to the mean, while a high standard deviation indicates that the values are spread out over a wider range.

Mean (μ)

The average of a set of numbers, calculated by dividing the sum of these numbers by the count of numbers in the set.

Standard Deviation (σ)

An indicator that evaluates the degree of scatter or inconsistency of data points around the mean of the dataset.