online physics mcqs

Free Online Physics MCQs Practice

If you want t prepare Physics mcqs for passing initial tests of Army, Navy or PAF or any other competitive exams then here all past experiences have been shared which will help you to pass the physics mcqs tests easily. Moreover, these questions are basic which are very important for those who are applying for the jobs at matric level like Soldiers, Airman, Sailors or civilians tests of Army, navy or Pakistan Air Force.

Physics MCQs Quiz with Answers

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Physics Tests Quiz (Matric Level)

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What is the unit of work:-

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Sound require some ________ to travel.

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According to Hooke's law:-

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A car starts from rest. It acquires a speed of 25 m/s after 20 s. The distance moved by the car during this time is:-

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In dim light pupil:-

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Which material has large value of temperature coefficient of linear expansion:-

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The good radiators of heat among these are?

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Freezing point of Mercury is ______?

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Moon completes its one complete revolution around the earth in:-

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The unit of frequency is:-

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A body in the gravitational field always tends to move from a point of potential energy?

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The wall of middle ear opposite to the eardrum, which separates the middle ear from the inner ear has an opening called:-

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In international system of measurement the value of g is____:- ²

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According to coulomb's law, a force of attraction or repulsion  between two charged bodies is inversely proportional to:-

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If velocity of the body becomes double, then centripetal force will be:-

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In order to find the intensity of radiations , which device is used:-

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In SI system, the base unit of Torque is __________.

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The boiling point of water is?

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The speed of projectile at maximumHeight is half of its Initial Speed V is angle of projection is?

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When 400.1 is added to 20.54 we get

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The tangents drawn on the line of force indicates the direction of:-

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The capacitors which are generally used in radio sets for tuning are called:-

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The force acting on a unit ___ is called stress:-

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Density of water is maximum at _____.

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The force is directly proportional to the  change in length is called:-

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More Physics MCQs Online Free Solved

Mechanics : Physics MCQs

  1. The SI unit of force is:
    • a) Newton
    • b) Joule
    • c) Watt
    • d) Pascal
    • Answer: a)
  2. The rate of change of velocity is called:
    • a) Acceleration
    • b) Speed
    • c) Displacement
    • d) Momentum
    • Answer: a)
  3. A body of mass 10 kg is moving with a velocity of 2 m/s. Its kinetic energy is:
    • a) 10 J
    • b) 20 J
    • c) 40 J
    • d) 80 J
    • Answer: b)
  4. The principle of conservation of momentum states that:
    • a) Momentum can be created or destroyed
    • b) Momentum remains constant in an isolated system
    • c) Momentum is directly proportional to velocity
    • d) Momentum is inversely proportional to mass
    • Answer: b)
  5. The pressure exerted by a force of 20 N on an area of 5 m² is:
    • a) 4 Pa
    • b) 5 Pa
    • c) 10 Pa
    • d) 20 Pa
    • Answer: a)

Heat and Temperature : Physics MCQs

  1. The SI unit of temperature is:
    • a) Celsius
    • b) Fahrenheit
    • c) Kelvin
    • d) Calorie
    • Answer: c)
  2. The process of conversion of a liquid into a gas is called:
    • a) Evaporation
    • b) Condensation
    • c) Sublimation
    • d) Freezing
    • Answer: a)
  3. Specific heat capacity of a substance is the amount of heat required to raise the temperature of:
    • a) 1 kg of the substance by 1°C
    • b) 1 g of the substance by 1°C
    • c) 1 kg of water by 1°C
    • d) 1 g of water by 1°C
    • Answer: a)

Light : Physics MCQs

  1. The phenomenon of bending of light as it passes from one medium to another is called:
    • a) Reflection
    • b) Refraction
    • c) Diffraction
    • d) Dispersion
    • Answer: b)  
  2. The image formed by a plane mirror is:
  • a) Real and inverted
  • b) Virtual and inverted
  • c) Real and erect
  • d) Virtual and erect
  • Answer: d)

Sound : Physics MCQs

  1. The speed of sound in air is approximately:
  • a) 340 m/s
  • b) 300 m/s
  • c) 250 m/s
  • d) 200 m/s
  • Answer: a)
  1. The unit of frequency is:
  • a) Hertz
  • b) Decibel
  • c) Meter
  • d) Second
  • Answer: a)

Electricity : Physics MCQs

  1. The SI unit of electric current is:
  • a) Volt
  • b) Ampere
  • c) Ohm
  • d) Watt
  • Answer: b)
  1. Ohm’s law states that:
  • a) Current is directly proportional to voltage
  • b) Current is inversely proportional to voltage
  • c) Voltage is directly proportional to resistance
  • d) Resistance is inversely proportional to current
  • Answer: a)
  1. The device used to measure electric current is called:
  • a) Voltmeter
  • b) Ammeter
  • c) Ohmmeter
  • d) Galvanometer
  • Answer: b)

Magnetism : Physics MCQs

  1. The magnetic field lines around a bar magnet are:
  • a) Straight lines
  • b) Circular
  • c) Curved lines
  • d) Parallel lines
  • Answer: c)
  1. The north pole of a magnet attracts the:
  • a) North pole of another magnet
  • b) South pole of another magnet
  • c) Both north and south poles of another magnet
  • d) None of the above
  • Answer: b)

Modern Physics : Physics MCQs

  1. The phenomenon of emission of electrons from a metal surface when light of suitable frequency falls on it is called:
  • a) Photoelectric effect
  • b) Compton effect
  • c) Pair production
  • d) Nuclear fission
  • Answer: a)
  1. Radioactivity is the process of:
  • a) Emission of alpha, beta, and gamma rays
  • b) Emission of only alpha rays
  • c) Emission of only beta rays
  • d) Emission of only gamma rays
  • Answer: a)
  1. The nucleus of an atom consists of:
  • a) Protons only
  • b) Neutrons only
  • c) Protons and neutrons
  • d) Electrons and protons
  • Answer: c)

Related: How to Join Pak Army?

  1. What is the SI unit of force?
  • A) Joule
  • B) Newton
  • C) Watt
  • D) Pascal
  • Answer: B) Newton
  1. 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) Law of Gravitation
  • Answer: C) Newton’s Third Law
  1. What is the speed of light in a vacuum?
  • A) 3×106 m/s
  • B) 3×107 m/s
  • C) 3×108 m/s
  • D) 3×109 m/s
  • Answer: C) 3×108 m/s
  1. Which quantity remains constant in an isolated system?
  • A) Mass
  • B) Energy
  • C) Velocity
  • D) Momentum
  • Answer: B) Energy
  1. What is the unit of electric current?
  • A) Volt
  • B) Ohm
  • C) Ampere
  • D) Watt
  • Answer: C) Ampere
  1. Who is known as the father of modern physics?
  • A) Isaac Newton
  • B) Albert Einstein
  • C) Galileo Galilei
  • D) Nikola Tesla
  • Answer: B) Albert Einstein
  1. Which type of mirror is used in car rearview mirrors?
  • A) Plane mirror
  • B) Concave mirror
  • C) Convex mirror
  • D) Spherical mirror
  • Answer: C) Convex mirror
  1. What is the acceleration due to gravity on the Earth’s surface?
  • A) 7.8 m/s2
  • B) 8.8 m/s2
  • C) 9.8 m/s2
  • D) 10.8 m/s2
  • Answer: C) 9.8 m/s2
  1. What is the phenomenon of splitting of light into its component colors called?
  • A) Reflection
  • B) Refraction
  • C) Dispersion
  • D) Diffraction
  • Answer: C) Dispersion
  1. What device is used to measure electric current?
  • A) Voltmeter
  • B) Galvanometer
  • C) Ammeter
  • D) Barometer
  • Answer: C) Ammeter
  1. What is the basic unit of electric charge?
  • A) Coulomb
  • B) Ampere
  • C) Volt
  • D) Farad
  • Answer: A) Coulomb
  1. Who formulated the theory of relativity?
  • A) James Clerk Maxwell
  • B) Albert Einstein
  • C) Niels Bohr
  • D) Werner Heisenberg
  • Answer: B) Albert Einstein
  1. What is the main constituent of the Sun?
  • A) Hydrogen
  • B) Oxygen
  • C) Nitrogen
  • D) Helium
  • Answer: A) Hydrogen
  1. What is the SI unit of work?
  • A) Joule
  • B) Newton
  • C) Watt
  • D) Pascal
  • Answer: A) Joule
  1. Which of the following is a vector quantity?
  • A) Mass
  • B) Speed
  • C) Velocity
  • D) Temperature
  • Answer: C) Velocity
  1. What is the formula for calculating kinetic energy?
  • A) KE=1/2mv2
  • B) KE=mv
  • C) KE=mg
  • D) KE=mgh
  • Answer: A) KE=12mv2
  1. Which law explains why we feel a backward push when a bus starts suddenly?
  • A) Newton’s First Law
  • B) Newton’s Second Law
  • C) Newton’s Third Law
  • D) Hooke’s Law
  • Answer: A) Newton’s First Law
  1. In an electric circuit, what is the role of a resistor?
  • A) Increases current
  • B) Stores energy
  • C) Reduces current
  • D) Converts AC to DC
  • Answer: C) Reduces current
  1. What type of energy is stored in a stretched spring?
  • A) Kinetic energy
  • B) Potential energy
  • C) Thermal energy
  • D) Sound energy
  • Answer: B) Potential energy
  1. Who discovered the electron?
  • A) Isaac Newton
  • B) Albert Einstein
  • C) J.J. Thomson
  • D) Rutherford
  • Answer: C) J.J. Thomson

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