Physics MCQs

1. Which of the following is a scalar quantity?
A) Force
B) Velocity
C) Acceleration
D) Distance
Answer: D) Distance

2. What is the SI unit of torque?
A) Newton
B) Joule
C) Watt
D) Newton-meter
Answer: D) Newton-meter

3. Which of the following is a fundamental force of nature?
A) Frictional force
B) Gravitational force
C) Tension force
D) Electrostatic force
Answer: B) Gravitational force

4. What is the formula for calculating power in an electrical circuit?
A) Power = Voltage × Current
B) Power = Voltage ÷ Current
C) Power = Current ÷ Voltage
D) Power = Resistance × Current
Answer: A) Power = Voltage × Current

5. Which of the following statements is true about nuclear radiation?
A) Gamma radiation consists of electrons.
B) Alpha particles are negatively charged.
C) Beta particles have a higher penetration power than gamma rays.
D) Gamma rays are electromagnetic waves.
Answer: D) Gamma rays are electromagnetic waves.

6. What is the SI unit of angular velocity?
A) Radian per second
B) Hertz
C) Newton per meter
D) Pascal
Answer: A) Radian per second

7. Which of the following statements about waves is true?
A) Frequency is inversely proportional to wavelength.
B) Amplitude determines the speed of the wave.
C) Longer wavelengths have higher frequencies.
D) Wave speed depends only on medium properties.
Answer: A) Frequency is inversely proportional to wavelength.

8. What is the formula for calculating the electric field intensity?
A) E = V/R
B) E = F/q
C) E = V/d
D) E = Fd
Answer: B) E = F/q

9. Which of the following is a characteristic of a series circuit?
A) Total resistance decreases as more resistors are added.
B) Voltage is the same across all resistors.
C) Current is the same across all resistors.
D) None of the above.
Answer: C) Current is the same across all resistors.

10. What is the law of conservation of charge?
A) Charge can be created but cannot be destroyed.
B) Charge cannot be created or destroyed, only transferred.
C) Charge can be destroyed but cannot be created.
D) None of the above.
Answer: B) Charge cannot be created or destroyed, only transferred.

11. What is the formula for gravitational potential energy near the surface of Earth?
A) PE = mgh
B) PE = 1/2 mv^2
C) PE = Fd
D) PE = PΔV
Answer: A) PE = mgh

12. Which of the following is a unit of electric potential?
A) Volt
B) Ampere
C) Ohm
D) Coulomb
Answer: A) Volt

13. What is the formula for calculating the kinetic energy of an object in rotational motion?
A) KE = 1/2 Iω^2
B) KE = 1/2 mv^2
C) KE = Fd
D) KE = PΔV
Answer: A) KE = 1/2 Iω^2

14. Which of the following is an example of a first-class lever?
A) Scissors
B) Tweezers
C) Wheelbarrow
D) Seesaw
Answer: D) Seesaw

15. What is the SI unit of magnetic flux density?
A) Weber
B) Tesla
C) Henry
D) Gauss
Answer: B) Tesla

16. What is the principle of Archimedes?
A) An object in motion tends to stay in motion unless acted upon by an external force.
B) The pressure of a fluid increases with depth.
C) The buoyant force on an object is equal to the weight of the fluid displaced by the object.
D) The volume of a gas is directly proportional to its temperature.
Answer: C) The buoyant force on an object is equal to the weight of the fluid displaced by the object.

17. What is the formula for calculating mechanical advantage in a simple machine?
A) MA = Output Force / Input Force
B) MA = Input Force / Output Force
C) MA = Output Distance / Input Distance
D) MA = Input Distance / Output Distance
Answer: A) MA = Output Force / Input Force

18. Which of the following is true about the Doppler effect?
A) It affects all types of waves equally.
B) It causes an increase in frequency for a moving source toward an observer.
C) It is not applicable to sound waves.
D) It does not depend on the relative velocity between the source and the observer.
Answer: B) It causes an increase in frequency for a moving source toward an observer.

19. What is the formula for calculating the pressure of a gas?
A) P = F/A
B) P = Fd
C) P = mgh
D) P = ρgh
Answer: A) P = F/A

20. Which of the following is an example of a renewable energy source?
A) Coal
B) Natural Gas
C) Solar
D) Oil
Answer: C) Solar

21. What is the SI unit of electric charge?
A) Ampere
B) Volt
C) Ohm
D) Coulomb
Answer: D) Coulomb

22. Which law of motion states that an object at rest will remain at rest, and an object in motion will remain in motion unless acted upon by an external force?
A) Newton’s first law
B) Newton’s second law
C) Newton’s third law
D) None of the above
Answer: A) Newton’s first law

23. What is the SI unit of frequency?
A) Hertz
B) Joule
C) Watt
D) Pascal
Answer: A) Hertz

24. What is the formula for Ohm’s Law?
A) V = IR
B) I = VR
C) R = VI
D) R = IV
Answer: A) V = IR

25. What is the SI unit of power?
A) Watt
B) Joule
C) Volt
D) Ampere
Answer: A) Watt

26. Which of the following is a non-renewable source of energy?
A) Wind
B) Solar
C) Coal
D) Hydroelectric
Answer: C) Coal

27. What is the SI unit of capacitance?
A) Ohm
B) Farad
C) Henry
D) Ampere
Answer: B) Farad

28. Which of the following is a characteristic of a parallel circuit?
A) Total resistance decreases as more resistors are added.
B) Current is the same across all resistors.
C) Voltage across each resistor is different.
D) None of the above.
Answer: A) Total resistance decreases as more resistors are added.

29. What is the law of conservation of momentum?
A) Momentum cannot be created or destroyed.
B) Momentum is directly proportional to velocity.
C) Momentum is inversely proportional to mass.
D) Momentum is conserved in a closed system.
Answer: D) Momentum is conserved in a closed system.

30. What is the SI unit of magnetic flux?
A) Weber
B) Tesla
C) Gauss
D) Henry
Answer: A) Weber

31. Which of the following is an example of convection?
A) Boiling water in a pot
B) Heating a metal rod
C) Sunlight warming the Earth’s surface
D) Ice melting at room temperature
Answer: A) Boiling water in a pot

32. What is the formula for electrical resistance?
A) R = V/I
B) R = I/V
C) R = P/I^2
D) R = VI
Answer: A) R = V/I

33. Which of the following is a semiconductor material?
A) Silicon
B) Copper
C) Aluminum
D) Gold
Answer: A) Silicon

34. What is the law of conservation of charge?
A) Charge can be created but cannot be destroyed.
B) Charge cannot be created or destroyed, only transferred.
C) Charge can be destroyed but cannot be created.
D) None of the above.
Answer: B) Charge cannot be created or destroyed, only transferred.

35. What is the formula for gravitational potential energy?
A) PE = mgh
B) PE = 1/2 mv^2
C) PE = Fd
D) PE = PΔV
Answer: A) PE = mgh

36. Which of the following is a unit of electric potential?
A) Volt
B) Ampere
C) Ohm
D) Coulomb
Answer: A) Volt

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