- 1. Physics is the natural science that deals with the study of matter, energy, space, and time. It seeks to understand how the universe functions from the smallest subatomic particles to the largest galaxies. Physics encompasses various disciplines such as mechanics, thermodynamics, electromagnetism, and quantum mechanics. By observing and experimenting with physical phenomena, physicists develop theories and laws to explain the fundamental forces and principles that govern the physical world. The insights gained from the study of physics have led to groundbreaking discoveries and technological advancements that have transformed our understanding of the universe and improved our daily lives.
What is the SI unit of force?
A) Newton
B) Watt
C) Volt
D) Joule
- 2. Which scientist formulated the three laws of motion?
A) Isaac Newton
B) Albert Einstein
C) Max Planck
D) Galileo Galilei
- 3. What does Ohm's Law describe?
A) Motion of planets
B) Behavior of gases
C) Relationship between voltage, current, and resistance
D) Genetics
- 4. Which type of energy is associated with an object's motion?
A) Chemical energy
B) Kinetic energy
C) Thermal energy
D) Potential energy
- 5. What is the unit of electric charge?
A) Coulomb
B) Volt
C) Watt
D) Joule
- 6. Which law of thermodynamics states that energy cannot be created or destroyed?
A) First Law of Thermodynamics
B) Third Law of Thermodynamics
C) Zeroth Law of Thermodynamics
D) Second Law of Thermodynamics
- 7. What is the force required to accelerate a 5 kg object at 2 m/s2?
A) 7 N
B) 15 N
C) 3 N
D) 10 N
- 8. What is the SI unit of power?
A) Newton
B) Watt
C) Joule
D) Volt
- 9. Which law of motion states that for every action, there is an equal and opposite reaction?
A) Einstein's Law
B) Newton's Third Law
C) Newton's Second Law
D) Newton's First Law
- 10. What is the unit of frequency?
A) Coulomb
B) Newton
C) Hertz
D) Watt
- 11. What is the force that resists the motion of objects sliding against each other?
A) Viscosity
B) Friction
C) Gravity
D) Tension
- 12. Which type of waves do not require a medium to travel through?
A) Sound waves
B) Water waves
C) Seismic waves
D) Electromagnetic waves
- 13. Which scientist is credited with the theory of general relativity?
A) Henry Cavendish
B) Galileo Galilei
C) Isaac Newton
D) Albert Einstein
- 14. What is the unit of resistance in an electrical circuit?
A) Ohm
B) Volt
C) Watt
D) Ampere
- 15. What is the process by which a substance directly changes from a solid to a gas called?
A) Melting
B) Condensation
C) Evaporation
D) Sublimation
- 16. What is the acceleration due to gravity on the surface of Earth?
A) 9.81 m/s2
B) 10.0 m/s2
C) 5.0 m/s2
D) 7.32 m/s2
- 17. What is the SI unit of electric potential difference?
A) Volt
B) Ohm
C) Coulomb
D) Ampere
- 18. What term describes the ratio of an object's mass to its volume?
A) Volume
B) Density
C) Weight
D) Area
- 19. What is the transfer of energy as heat through a material called?
A) Transpiration
B) Convection
C) Conduction
D) Radiation
- 20. What is the process by which an atom loses an electron called?
A) Decay
B) Ionization
C) Fusion
D) Isotope
- 21. Which type of energy is stored in the bonds between atoms and molecules?
A) Electrical energy
B) Chemical energy
C) Mechanical energy
D) Nuclear energy
- 22. What is the law that states that the total momentum of an isolated system remains constant?
A) Ohm's Law
B) Second Law of Thermodynamics
C) Law of Inertia
D) Law of Conservation of Momentum
- 23. What is the SI unit of magnetic field strength?
A) Joule
B) Ampere
C) Tesla
D) Ohm
- 24. What happens to the velocity of an object in uniform circular motion?
A) Velocity decreases
B) Velocity increases
C) Magnitude of velocity remains constant, but direction changes
D) Magnitude and direction of velocity change
- 25. Which law of thermodynamics states that entropy of any isolated system always increases?
A) Third Law of Thermodynamics
B) Zeroth Law of Thermodynamics
C) First Law of Thermodynamics
D) Second Law of Thermodynamics
- 26. What is the product of an object's mass and velocity called?
A) Potential energy
B) Force
C) Momentum
D) Power
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