A photostat machine works on _____________?
Correct answer: D. electrostatic image making
- A. electromagnetic image making
- B. magnetic image making
- C. thermal image making
- D. electrostatic image making
Explanation
A photostat machine gives the document and drum electrostatic charges, so toner sticks selectively to form the copy. This is why its basic principle is called electrostatic image making.
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Everyday physics explains motion, force, work, power, pressure, heat, light, sound and electricity through familiar devices and natural events. Topics include simple machines, friction, expansion, reflection and refraction, lenses, household circuits, electrical safety and magnetism, with mass distinguished from weight and heat distinguished from temperature.
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