It Is Desired to Project an Image of an Object

question 2

Multiple Choice

It is desired to project an image of an object four times actual size with a lens of focal length 20 cm. What object distance should be used?

• A)100 cm
• B)80 cm
• C)4 cm
• D)25 cm
• E)5 cm

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Definitions:

Pure

Refers to a substance that is not mixed with any other substance, having a homogenous chemical composition.

Ionization

The process by which an atom or a molecule acquires a negative or positive charge by gaining or losing electrons.

Important Factor

A significant element or aspect that contributes to a result or outcome.

Gas

A state of matter consisting of particles that have neither a defined volume nor defined shape, typically able to expand freely.