Physics MCQs

1. What is the SI unit of electric current?
A) Ohm
B) Ampere
C) Volt
D) Watt

Answer: B) Ampere

2. Which law states that the induced electromotive force (EMF) in a circuit is directly proportional to the rate of change of magnetic flux through the circuit?
A) Faraday’s Law of Electromagnetic Induction
B) Ohm’s Law
C) Gauss’s Law
D) Newton’s Law of Motion

Answer: A) Faraday’s Law of Electromagnetic Induction

3. What is the SI unit of power?
A) Joule
B) Watt
C) Newton
D) Volt

Answer: B) Watt

4. According to Newton’s first law of motion, an object at rest will remain at rest unless acted upon by a _______.
A) gravitational force
B) net force
C) magnetic force
D) frictional force

Answer: B) net force

5. What type of lens is thicker in the middle than at the edges and causes light rays to converge to a single point?
A) Convex lens
B) Concave lens
C) Plano-concave lens
D) Plano-convex lens

Answer: A) Convex lens

6. What is the SI unit of capacitance?
A) Farad
B) Henry
C) Coulomb
D) Ohm

Answer: A) Farad

7. The acceleration due to gravity on the surface of the Earth is approximately _______.
A) 9.81 m/s²
B) 3.00 m/s²
C) 6.67 × 10⁻¹¹ Nm²/kg²
D) 1.62 m/s²

Answer: A) 9.81 m/s²

8. What is the phenomenon called when a wave changes direction as it passes from one medium to another at an angle?
A) Diffraction
B) Refraction
C) Reflection
D) Interference

Answer: B) Refraction

9. According to Einstein’s theory of relativity, mass and energy are equivalent and can be converted into each other according to the equation _______.
A) E = mc
B) E = mc²
C) E = mv²
D) E = m²c²

Answer: B) E = mc²

10. What is the fundamental SI unit of temperature?
A) Celsius
B) Kelvin
C) Fahrenheit
D) Rankine

Answer: B) Kelvin

11. Which of these is NOT a fundamental force in nature?
A) Gravity
B) Electromagnetic force
C) Strong nuclear force
D) Centrifugal force

Answer: D) Centrifugal force

12. Which law states that the total electric flux through a closed surface is equal to the charge enclosed divided by the permittivity?
A) Gauss’s Law
B) Ohm’s Law
C) Faraday’s Law
D) Coulomb’s Law

Answer: A) Gauss’s Law

13. In which type of nuclear reaction do lighter nuclei combine to form a heavier nucleus, releasing energy?
A) Nuclear fission
B) Nuclear fusion
C) Alpha decay
D) Beta decay

Answer: B) Nuclear fusion

14. The phenomenon of persistence of vision explains why we perceive continuous motion in _______.
A) movies
B) television
C) rotating fan blades
D) all of the above

Answer: D) all of the above

15. What is the unit of electric charge?
A) Volt
B) Ampere-hour
C) Coulomb
D) Ohm

Answer: C) Coulomb

16. Which of these is a vector quantity?
A) Speed
B) Distance
C) Displacement
D) Temperature

Answer: C) Displacement

17. The instrument used to measure atmospheric pressure is called a _______.
A) barometer
B) hygrometer
C) altimeter
D) manometer

Answer: A) barometer

18. Which type of wave requires a medium to propagate?
A) Electromagnetic wave
B) Sound wave
C) X-ray
D) Gamma-ray

Answer: B) Sound wave

19. Which law states that for every action, there is an equal and opposite reaction?
A) Newton’s First Law
B) Newton’s Second Law
C) Newton’s Third Law
D) Kepler’s Third Law

Answer: C) Newton’s Third Law

20. Which of these is NOT a type of mechanical wave?
A) Longitudinal wave
B) Transverse wave
C) Electromagnetic wave
D) Surface wave

Answer: C) Electromagnetic wave

21. What is the phenomenon called when light spreads out as it passes through a narrow slit?
A) Diffraction
B) Refraction
C) Reflection
D) Interference

Answer: A) Diffraction

22. The force experienced by a current-carrying conductor in a magnetic field is known as _______.
A) Faraday’s Law
B) Lenz’s Law
C) Ohm’s Law
D) Lorentz Force

Answer: D) Lorentz Force

23. What is the formula for kinetic energy?
A) E=12mv2E = \frac{1}{2} mv^2E=21​mv2
B) $E=mgh$
C) E=mvtE = mv_tE=mvt​
D) $E=Fd$

Answer: A) E=12mv2E = \frac{1}{2} mv^2E=21​mv2

24. The property of a body to remain at rest or in uniform motion in the absence of an external force is known as _______.
A) inertia
B) momentum
C) acceleration
D) equilibrium

Answer: A) inertia

25. Which of these devices is used to measure electric current?
A) Ammeter
B) Voltmeter
C) Galvanometer
D) Ohmmeter

Answer: A) Ammeter

26. The phenomenon of mirage is due to _______.
A) reflection
B) refraction
C) diffraction
D) interference

Answer: B) refraction

27. Which type of mirror always produces a virtual image?
A) Concave mirror
B) Convex mirror
C) Plane mirror
D) Spherical mirror

Answer: B) Convex mirror

28. The rate of change of momentum of an object is equal to the _______ applied to it.
A) force
B) velocity
C) acceleration
D) mass

Answer: A) force

29. Which law states that the pressure of a given mass of gas is inversely proportional to its volume, provided the temperature remains constant?
A) Boyle’s Law
B) Charles’s Law
C) Gay-Lussac’s Law
D) Avogadro’s Law

Answer: A) Boyle’s Law

30. What is the unit of magnetic field strength?
A) Tesla
B) Gauss
C) Weber
D) Ohm

Answer: A) Tesla

31. Which of these is NOT a type of electromagnetic radiation?
A) X-ray
B) Gamma-ray
C) Ultrasound
D) Microwave

Answer: C) Ultrasound

32. What is the principle behind a transformer?
A) Faraday’s Law of Induction
B) Newton’s Third Law
C) Archimedes’ Principle
D) Pascal’s Principle

Answer: A) Faraday’s Law of Induction

33. The work done in moving a charge in an electric field from one point to another is measured in _______.
A) volts
B) ohms
C) joules
D) coulombs

Answer: C) joules

34. What type of lens is thinner in the middle than at the edges and causes light rays to diverge?
A) Concave lens
B) Convex lens
C) Plano-concave lens
D) Plano-convex lens

Answer: A) Concave lens

35. Which law states that the heat gained by a system is equal to the sum of the heat lost and the work done by the system?
A) First Law of Thermodynamics
B) Second Law of Thermodynamics
C) Boyle’s Law
D) Charles’s Law

Answer: A) First Law of Thermodynamics

36. The acceleration due to gravity decreases with altitude because _______.
A) there is less air resistance
B) the Earth’s magnetic field weakens
C) the mass of the Earth decreases
D) the distance from the Earth’s center increases

Answer: D) the distance from the Earth’s center increases

37. What is the SI unit of frequency?
A) Hertz
B) Watt
C) Pascal
D) Newton

Answer: A) Hertz

38. What is the energy stored in a capacitor?
A) E=12CV2E = \frac{1}{2} CV^2E=21​CV2
B) E=12LI2E = \frac{1}{2} LI^2E=21​LI2
C) E=12mv2E = \frac{1}{2} mv^2E=21​mv2
D) E=12kx2E = \frac{1}{2} kx^2E=21​kx2

Answer: A) E=12CV2E = \frac{1}{2} CV^2E=21​CV2

39. Which of these materials has the highest conductivity?
A) Rubber
B) Glass
C) Copper
D) Wood

Answer: C) Copper

40. The study of motion and the forces producing motion is called _______.
A) geology
B) physics
C) chemistry
D) biology

Answer: B) physics

41. What is the phenomenon called when a wave bounces back after striking a boundary?
A) Refraction
B) Diffraction
C) Reflection
D) Interference

Answer: C) Reflection

42. According to Newton’s second law of motion, the acceleration of an object is directly proportional to the _______ applied to it.
A) mass
B) velocity
C) force
D) displacement

Answer: C) force

43. The force of attraction or repulsion between two charged objects is governed by _______.
A) Newton’s Law of Gravitation
B) Coulomb’s Law
C) Ohm’s Law
D) Hooke’s Law

Answer: B) Coulomb’s Law

44. What is the unit of electrical resistance?
A) Ohm
B) Ampere
C) Volt
D) Watt

Answer: A) Ohm

45. Which color of light bends the most when passing through a prism?
A) Red
B) Green
C) Blue
D) All colors bend equally

Answer: C) Blue

46. Which scientist formulated the laws of motion?
A) Isaac Newton
B) Albert Einstein
C) Galileo Galilei
D) Johannes Kepler

Answer: A) Isaac Newton

47. The phenomenon of a rainbow is caused by _______.
A) reflection
B) refraction
C) diffraction
D) dispersion

Answer: D) dispersion

48. Which law states that the volume of a given mass of gas is directly proportional to its temperature, provided the pressure remains constant?
A) Boyle’s Law
B) Charles’s Law
C) Gay-Lussac’s Law
D) Avogadro’s Law

Answer: B) Charles’s Law

49. What is the SI unit of work and energy?
A) Joule
B) Newton
C) Watt
D) Pascal

Answer: A) Joule

50. Which of these statements is true about a convex mirror?
A) It always produces a virtual image.
B) It always produces a real image.
C) It has a focal point in front of the mirror.
D) It has a focal point behind the mirror.

Answer: A) It always produces a virtual image.

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