Quiz on Basic Radiation Physics

What is the SI unit of radioactivity?

• Curie (Ci)

• Sievert (Sv)

• Becquerel (Bq)

• Gray (Gy)

Which imaging modality uses high-frequency sound waves?

• General Radiography

• Ultrasonography (USG)

• Magnetic Resonance Imaging (MRI)

• Computed Tomography (CT)

What is the primary purpose of the Gray (Gy) unit?

• Measure dose equivalent

• Measure radioactivity

• Measure exposure

• Measure absorbed dose

Which of the following is NOT a fundamental physical quantity?

• Time

• Energy

• Velocity

• Mass

What does the Inverse Square Law describe?

• Intensity of radiation decreases with distance

• Intensity of radiation increases with distance

• Radiation exposure is constant

• Radiation is absorbed equally

Which imaging modality provides real-time X-ray imaging?

• CT

• MRI

• Ultrasonography

• Fluoroscopy

What is the unit of equivalent dose?

• Curie (Ci)

• Becquerel (Bq)

• Sievert (Sv)

• Gray (Gy)

Which type of radiation has the highest penetrating power?

• Beta particles

• X-rays

• Alpha particles

• Gamma rays

What is the purpose of using contrast media in fluoroscopy?

• To stabilize the patient

• To reduce radiation exposure

• To enhance visualization

• To increase image resolution

Which of the following is a derived physical quantity?

• Length

• Mass

• Velocity

• Time