Two Converging Lenses, the First with Focal Length 25 Cm

question 4

Multiple Choice

Two converging lenses, the first with focal length 25 cm and the second with focal length 20 cm, are separated by 30 cm. A 4.0 cm tall object is placed 50 cm in front of the first lens. Where is the image formed by the first lens?

• A) 17 cm in front of the first lens
• B) 50 cm after the first lens
• C) 75 cm after the first lens
• D) 27 cm after the second lens
• E) 50 cm after the second lens

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Definitions:

Sample

A sample is a subset of individuals, items, or data taken from a larger population for the purpose of analysis.

Nominal Or Interval

Categories of measurement scales in statistics where nominal involves labeling without a natural order and interval implies ordered categories with meaningful intervals between values.

Level Of Measurement

The nature of the information within the values assigned to variables, indicating the degree to which mathematical operations can be performed.

Frequency Distribution

A frequency distribution is a summary of data showing the number (frequency) of observations in each of several non-overlapping categories or classes.