CT Scan is done by using

Infra-red Rays
Ultrasonic Waves
Visible Light
X-Rays

The correct answer is (d). CT scans use X-rays to create detailed cross-sectional images of the body. The images can be used to diagnose a variety of medical conditions, including cancer, heart disease, and stroke.

Infrared rays are a type of electromagnetic radiation with wavelengths longer than visible light. They are

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used in a variety of applications, including night vision, thermal imaging, and cooking.

Ultrasonic waves are a type of sound wave with frequencies above the range of human hearing. They are used in a variety of applications, including medical imaging, sonar, and cleaning.

Visible light is a type of electromagnetic radiation with wavelengths between 380 and 700 nanometers. It is the light that we can see with our eyes.

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