Fundamental Concepts
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Questions and Answers

What is the primary focus of medical physics?

  • Ensuring radiation safety (correct)
  • Studying biological phenomena
  • Diagnosis and treatment of disease
  • Enhancing and restoring functional ability

    • What is the main goal of physical medicine and rehabilitation?

  • Enhancing and restoring functional ability (correct)
  • Studying biological phenomena
  • Ensuring radiation safety
  • Diagnosis and treatment of disease

    • What does biophysics study?

  • Physical impairments or disabilities
  • Radiation safety
  • Biological phenomena using physics methods (correct)
  • Diagnosis and treatment of disease

    • What does radiological protection primarily aim to protect people from?

    <p>Exposure to ionizing radiation</p> Signup and view all the answers

    In what way is modeling used to understand physical phenomena?

    <p>By selecting main features similar to the phenomenon</p> Signup and view all the answers

    How is the flow of blood represented in the concept of modeling?

    <p>By the flow of electricity</p> Signup and view all the answers

    What is the purpose of measurements in the body?

    <p>To monitor bodily functions like pulse</p> Signup and view all the answers

    Which type of measurement involves removing foreign substances from the blood?

    <p>Non-repetitive measurements</p> Signup and view all the answers

    What is a unit of measurement?

    <p>A standard magnitude for a quantity</p> Signup and view all the answers

    Which system is the most widely used for measurement?

    <p>The International System of Units (SI)</p> Signup and view all the answers

    Which of these is NOT a base unit in the International System of Units?

    <p>Inch (in)</p> Signup and view all the answers

    What is the SI unit for temperature?

    <p>Kelvin (K)</p> Signup and view all the answers

    Which of the following is considered a base quantity in the SI system?

    <p>Temperature</p> Signup and view all the answers

    What is the base unit for mass in the International System of Units?

    <p>Kilogram</p> Signup and view all the answers

    Which physical quantity can be quantified as 'n kg'?

    <p>Mass</p> Signup and view all the answers

    What is the base unit for length in the International System of Units?

    <p>Meter</p> Signup and view all the answers

    Which physical quantity is not considered a base quantity in the SI system?

    <p>Energy</p> Signup and view all the answers

    What is the symbol for the base unit of mass in the International System of Units?

    <p>Kg</p> Signup and view all the answers

    What is the equation that represents the relationship between forces (F), mass (m), and acceleration (a)?

    <p>F = ma</p> Signup and view all the answers

    In the medical field, what does the heart rate (R) depend on mathematically in terms of body power (p)?

    <p>R = f(p)</p> Signup and view all the answers

    What occurs in a system when its outputs are routed back as inputs in a chain of cause-and-effect?

    <p>Feedback</p> Signup and view all the answers

    What characterizes negative feedback in a system?

    <p>Increasing in one side and decreasing in another</p> Signup and view all the answers

    Which type of feedback occurs when two changes happen in the same direction?

    <p>Positive feedback</p> Signup and view all the answers

    What is the fundamental concept of measurement related to?

    <p>Comparing characteristics of objects or events</p> Signup and view all the answers

    What is the base unit of time in SI?

    <p>Second</p> Signup and view all the answers

    What is the base unit of electric current in SI?

    <p>Ampere</p> Signup and view all the answers

    Express 4.54 gm in milligrams.

    <p>4540 mg</p> Signup and view all the answers

    Convert 1228 km/h to meters per second.

    <p>341.11 m/s</p> Signup and view all the answers

    What is the volume of 1.55 cm³ in cubic millimeters?

    <p>1550 mm³</p> Signup and view all the answers

    Which term is synonymous with a mistake?

    <p>Error</p> Signup and view all the answers

    Accuracy in measurement refers to the closeness of the measurements to a specific value.

    <p>True</p> Signup and view all the answers

    Precision in measurement is a description of systematic errors.

    <p>False</p> Signup and view all the answers

    High accuracy in measurement requires both high precision and high trueness.

    <p>True</p> Signup and view all the answers

    Error in statistics is the same as the difference between the computed value and the correct value.

    <p>True</p> Signup and view all the answers

    Precision in measurement is a measure of statistical variability.

    <p>True</p> Signup and view all the answers

    Measurements in the body can be divided into two groups: Repetitive and Non-repetitive.

    <p>True</p> Signup and view all the answers

    The International System of Units (SI) comprises seven base units.

    <p>True</p> Signup and view all the answers

    A unit of measurement is a variable quantity.

    <p>False</p> Signup and view all the answers

    The SI system includes a set of ten prefixes to the unit names and symbols.

    <p>False</p> Signup and view all the answers

    The base unit for measuring temperature in the SI system is kelvin.

    <p>True</p> Signup and view all the answers

    The symbol for the base unit of luminous intensity in the SI system is 'L'.

    <p>False</p> Signup and view all the answers

    Physical medicine is a branch of medicine that aims to enhance and restore functional ability and quality of life to those with physical impairments or disabilities.

    <p>True</p> Signup and view all the answers

    Biophysics covers all scales of biological organization, from molecular to atomic and populations.

    <p>False</p> Signup and view all the answers

    Radiological physics is involved with the use of radiation in the diagnosis and treatment of diseases.

    <p>True</p> Signup and view all the answers

    Radiation protection, also known as radiological protection, focuses on exposing people to harmful effects of non-ionizing radiation.

    <p>False</p> Signup and view all the answers

    Modeling involves complete replacement of a physical phenomenon with something similar.

    <p>False</p> Signup and view all the answers

    The flow of blood is analogously represented by the flow of water in modeling.

    <p>False</p> Signup and view all the answers

    The base unit of mass in the International System of Units is the gram.

    <p>False</p> Signup and view all the answers

    The SI unit symbol for length is 'l'.

    <p>False</p> Signup and view all the answers

    The speed of light in a vacuum is a fundamental unit in the International System of Units.

    <p>False</p> Signup and view all the answers

    Physical quantities can only be expressed using magnitude, not units.

    <p>False</p> Signup and view all the answers

    Derived units in the SI system are all based on base quantities.

    <p>True</p> Signup and view all the answers

    A physical property that can be quantified by measurement is termed a physical quantity.

    <p>True</p> Signup and view all the answers

    The second is the base unit of time in SI.

    <p>True</p> Signup and view all the answers

    1 gram is equal to 10 milligrams.

    <p>False</p> Signup and view all the answers

    1228 km/h is equivalent to 1228 m/s.

    <p>False</p> Signup and view all the answers

    1 cubic centimeter is equal to 1000 cubic millimeters.

    <p>True</p> Signup and view all the answers

    Error and mistake are synonymous terms.

    <p>True</p> Signup and view all the answers

    High accuracy in measurement requires high precision and low trueness.

    <p>False</p> Signup and view all the answers

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