An Object Is Placed 21 Cm from a Concave Lens

question 3

Multiple Choice

An object is placed 21 cm from a concave lens of focal length 25 cm. What is the magnification?

• A) -0.54
• B) 0.54
• C) -0.32
• D) -0.22
• E) 0.22

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Definitions:

Margin of Error

The amount of error allowed in the results of a poll or survey, reflecting the confidence in the results.

Observations

Data collected during an experiment or research which are analyzed to gain insights and draw conclusions.

Confidence Intervals

A gamut of values, developed from the statistics of a sampling, with a high chance of containing the value of an unknown population parameter.

Interval Center

Refers to the midpoint of an interval, representing the average of its upper and lower bounds.