Questions & Answers
Browse all 20 questions from the
Physics General Knowledge study set below.
Each question shows the correct answer — select a study format above to practice interactively.
1
What is the SI unit of electric potential difference?
-
A
Ampere
-
B
Volt
-
C
Ohm
-
D
Watt
2
Which subatomic particle carries a negative electric charge?
-
A
Proton
-
B
Neutron
-
C
Electron
-
D
Positron
3
What is the approximate speed of light in a vacuum?
-
A
300,000 km/s
-
B
150,000 km/s
-
C
1,000,000 km/s
-
D
3,000 km/s
4
Which law states that for every action, there is an equal and opposite reaction?
-
A
Newton's First Law
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B
Newton's Second Law
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C
Newton's Third Law
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D
Hooke's Law
5
What is the process by which heat is transferred through the movement of fluids?
-
A
Conduction
-
B
Radiation
-
C
Convection
-
D
Insulation
6
In optics, what is the term for the bending of light as it passes from one medium to another?
-
A
Reflection
-
B
Diffraction
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C
Refraction
-
D
Polarization
7
What is the primary unit used to measure force in the International System of Units?
-
A
Joule
-
B
Newton
-
C
Pascal
-
D
Tesla
8
Which type of electromagnetic radiation has the longest wavelength?
-
A
Gamma rays
-
B
X-rays
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C
Radio waves
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D
Ultraviolet
9
Who is credited with the formulation of the theory of general relativity?
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A
Isaac Newton
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B
Niels Bohr
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C
Albert Einstein
-
D
Max Planck
10
What is the state of matter characterized by ionized gas and free electrons?
-
A
Solid
-
B
Liquid
-
C
Gas
-
D
Plasma
11
Which device is used to measure electric current?
-
A
Voltmeter
-
B
Ammeter
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C
Galvanometer
-
D
Ohmmeter
12
What is the term for the amount of matter in an object?
-
A
Weight
-
B
Force
-
C
Mass
-
D
Density
13
Which principle states that the buoyant force on an object submerged in a fluid is equal to the weight of the fluid displaced?
-
A
Bernoulli's principle
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B
Archimedes' principle
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C
Pascal's law
-
D
Torricelli's law
14
What is the absolute zero temperature in degrees Celsius?
-
A
0°C
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B
-100°C
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C
-273.15°C
-
D
-373.15°C
15
Which fundamental force is responsible for holding the nucleus of an atom together?
-
A
Weak nuclear force
-
B
Strong nuclear force
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C
Electromagnetic force
-
D
Gravity
16
What is the unit of power in the SI system?
-
A
Joule
-
B
Watt
-
C
Calorie
-
D
Newton
17
Which component in a circuit is designed to resist the flow of electric current?
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A
Capacitor
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B
Inductor
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C
Resistor
-
D
Transistor
18
What is the frequency of a wave that has a period of 0.5 seconds?
-
A
0.5 Hz
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B
1 Hz
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C
2 Hz
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D
5 Hz
19
Which scientist is known for the discovery of the law of universal gravitation?
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A
Galileo Galilei
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B
Johannes Kepler
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C
Isaac Newton
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D
Michael Faraday
20
What property of a sound wave determines its pitch?
-
A
Amplitude
-
B
Frequency
-
C
Phase
-
D
Velocity
