59 Questions
What is the primary focus of medical physics?
Ensuring radiation safety
What is the main goal of physical medicine and rehabilitation?
Enhancing and restoring functional ability
What does biophysics study?
Biological phenomena using physics methods
What does radiological protection primarily aim to protect people from?
Exposure to ionizing radiation
In what way is modeling used to understand physical phenomena?
By selecting main features similar to the phenomenon
How is the flow of blood represented in the concept of modeling?
By the flow of electricity
What is the purpose of measurements in the body?
To monitor bodily functions like pulse
Which type of measurement involves removing foreign substances from the blood?
Non-repetitive measurements
What is a unit of measurement?
A standard magnitude for a quantity
Which system is the most widely used for measurement?
The International System of Units (SI)
Which of these is NOT a base unit in the International System of Units?
Inch (in)
What is the SI unit for temperature?
Kelvin (K)
Which of the following is considered a base quantity in the SI system?
Temperature
What is the base unit for mass in the International System of Units?
Kilogram
Which physical quantity can be quantified as 'n kg'?
Mass
What is the base unit for length in the International System of Units?
Meter
Which physical quantity is not considered a base quantity in the SI system?
Energy
What is the symbol for the base unit of mass in the International System of Units?
Kg
What is the equation that represents the relationship between forces (F), mass (m), and acceleration (a)?
F = ma
In the medical field, what does the heart rate (R) depend on mathematically in terms of body power (p)?
R = f(p)
What occurs in a system when its outputs are routed back as inputs in a chain of cause-and-effect?
Feedback
What characterizes negative feedback in a system?
Increasing in one side and decreasing in another
Which type of feedback occurs when two changes happen in the same direction?
Positive feedback
What is the fundamental concept of measurement related to?
Comparing characteristics of objects or events
What is the base unit of time in SI?
Second
What is the base unit of electric current in SI?
Ampere
Express 4.54 gm in milligrams.
4540 mg
Convert 1228 km/h to meters per second.
341.11 m/s
What is the volume of 1.55 cm³ in cubic millimeters?
1550 mm³
Which term is synonymous with a mistake?
Error
Accuracy in measurement refers to the closeness of the measurements to a specific value.
True
Precision in measurement is a description of systematic errors.
False
High accuracy in measurement requires both high precision and high trueness.
True
Error in statistics is the same as the difference between the computed value and the correct value.
True
Precision in measurement is a measure of statistical variability.
True
Measurements in the body can be divided into two groups: Repetitive and Non-repetitive.
True
The International System of Units (SI) comprises seven base units.
True
A unit of measurement is a variable quantity.
False
The SI system includes a set of ten prefixes to the unit names and symbols.
False
The base unit for measuring temperature in the SI system is kelvin.
True
The symbol for the base unit of luminous intensity in the SI system is 'L'.
False
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.
True
Biophysics covers all scales of biological organization, from molecular to atomic and populations.
False
Radiological physics is involved with the use of radiation in the diagnosis and treatment of diseases.
True
Radiation protection, also known as radiological protection, focuses on exposing people to harmful effects of non-ionizing radiation.
False
Modeling involves complete replacement of a physical phenomenon with something similar.
False
The flow of blood is analogously represented by the flow of water in modeling.
False
The base unit of mass in the International System of Units is the gram.
False
The SI unit symbol for length is 'l'.
False
The speed of light in a vacuum is a fundamental unit in the International System of Units.
False
Physical quantities can only be expressed using magnitude, not units.
False
Derived units in the SI system are all based on base quantities.
True
A physical property that can be quantified by measurement is termed a physical quantity.
True
The second is the base unit of time in SI.
True
1 gram is equal to 10 milligrams.
False
1228 km/h is equivalent to 1228 m/s.
False
1 cubic centimeter is equal to 1000 cubic millimeters.
True
Error and mistake are synonymous terms.
True
High accuracy in measurement requires high precision and low trueness.
False
Test your knowledge on fundamental concepts of measurement and units. Learn about the types of measurements in the body and how units of measurement are defined and adopted by convention or law.
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