[amp_mcq option1=”Electromagnetic image making” option2=”Electrostatic image making” option3=”Magnetic image making” option4=”Thermal image making” correct=”option2″]
The correct answer is: B. Electrostatic image making
A photostat machine is a device that uses electrostatics to create a copy of an image. The machine works by charging a piece of paper with a negative charge. The image to be copied is then placed on the paper, and the paper is exposed to light. The light causes the charged areas of the paper to attract ink, which creates a copy of the image.
Option A is incorrect because electromagnetic image making is a process that uses electromagnetic waves to create an image. This process is used in devices such as x-ray machines and MRI machines.
Option C is incorrect because magnetic image making is a process that uses magnetic fields to create an image. This process is used in devices such as hard drives and credit cards.
Option D is incorrect because thermal image making is a process that uses heat to create an image. This process is used in devices such as thermal cameras and infrared thermometers.