A Real Object Is 42

question 85

Multiple Choice

A real object is 42.1 cm from a negative lens that has a focal length of 25.6 cm.The object is 2.45 mm high.The height and orientation of the image are

• A)3.8 mm and inverted.
• B)0.93 mm and erect.
• C)6.4 mm and erect.
• D)0.38 mm and erect.
• E)None of these is correct.

---

Definitions:

Independent Variable

An independent variable is a factor or condition that is intentionally changed by the researcher to observe its effects on a dependent variable in an experiment.

Experimenter

An individual who conducts research or experiments, typically in a scientific context, to test hypotheses and draw conclusions.

Manipulated

In experimental research, refers to the intentional changing or altering of the independent variable to observe its effect on the dependent variable.

Control Group

In experimental research, a group of subjects that does not receive the treatment or experimental condition and is used as a benchmark to measure how the other tested subjects do.