Free Physics MCQs Mock Test Online with Answers

Q1 : What is dark energy?

A: Energy that accelerates universe expansion B: Energy that decelerates universe expansion C: A type of star D: None

Q2 : What is gamma decay?

A: Emission of an electron B: Emission of a photon C: Emission of a helium nucleus D: Emission of a neutron

Q3 : What is the Large Magellanic Cloud?

A: A galaxy B: A star C: A planet D: None

Q4 : What is the concept of stability of a submerged object?

A: Object returns to original position B: Object moves to new position C: Both a & b D: None

Q5 : What is Rutherford scattering?

A: Scattering of charged particles by a nucleus B: Scattering of neutral particles by a nucleus C: Scattering of photons by a nucleus D: Scattering of electrons by a nucleus

Q6 : What is the largest planet in our solar system?

A: Earth B: Saturn C: Jupiter D: None

Q7 : What is the concept of surface tension?

A: Force acting along surface B: Force acting perpendicular to surface C: Both a & b D: None

Q8 : What is the power dissipated by a 10Ω resistor in a series circuit with a 20V battery and a 10Ω resistor?

A: 10W B: 20W C: 40W D: None

Q9 : What is the concept of turbulent flow?

A: Fluid flows randomly B: Fluid flows smoothly C: Both a & b D: None

Q10 : What is the difference between nuclear binding energy and chemical binding energy?

A: Nuclear binding energy is stronger than chemical binding energy B: Nuclear binding energy is weaker than chemical binding energy C: Nuclear binding energy is equal to chemical binding energy D: Nuclear binding energy is unrelated to chemical binding energy

Q11 : What is a Norton equivalent circuit?

A: A simplified circuit with a single current source and resistance B: A circuit with multiple current sources C: A circuit with multiple resistances D: None

Q12 : A circuit has a 10Ω resistor and a 20Ω resistor in series. What is the total power dissipated?

A: 10W B: 20W C: 30W D: None

Q13 : A resistor has a current of 3A and a resistance of 4Ω. What is its voltage?

A: 6V B: 12V C: 24V D: None

Q14 : What is the concept of fluid pressure on a submerged surface?

A: Pressure is equal to weight of fluid above B: Pressure is less than weight of fluid above C: Pressure is greater than weight of fluid above D: None

Q15 : What is the nuclear force?

A: Force that holds the nucleus together B: Force that holds the electrons in orbit C: Force that holds the atoms together in a molecule D: Force that holds the molecules together in a solid

Q16 : What is the difference between a nuclear reaction and a particle reaction?

A: Nuclear reaction involves a nucleus, particle reaction involves particles B: Nuclear reaction involves particles, particle reaction involves a nucleus C: Nuclear reaction is a physical change, particle reaction is a chemical change D: Nuclear reaction is a chemical change, particle reaction is a physical change

Q17 : What is the concept of center of buoyancy?

A: Center of gravity of fluid displaced B: Center of gravity of object C: Both a & b D: None

Q18 : What is the process by which stars generate energy?

A: Nuclear fission B: Nuclear fusion C: Radioactive decay D: None

Q19 : What is the concept of atmospheric pressure?

A: Pressure exerted by atmosphere B: Pressure exerted by fluid C: Both a & b D: None

Q20 : What is the concept of center of buoyancy?

A: Center of gravity of fluid displaced B: Center of gravity of object C: Both a & b D: None

Q21 : What is a quasar?

A: An extremely luminous object B: A star C: A planet D: None

Q22 : What is the purpose of using KCL and KVL in circuit design?

A: To design a circuit with specific voltage and current B: To design a circuit with specific resistance and power C: To design a circuit with specific energy and efficiency D: None

Q23 : What is alpha decay?

A: Emission of an alpha particle from a nucleus B: Emission of a beta particle from a nucleus C: Emission of a gamma ray from a nucleus D: Emission of an electron from a nucleus

Q24 : What is the charge of an electron?

A: Positive B: Negative C: Neutral D: None

Q25 : What is the semi-empirical mass formula?

A: A formula used to calculate the binding energy of a nucleus B: A formula used to calculate the mass defect of a nucleus C: A formula used to calculate the nuclear radius D: A formula used to calculate the nuclear potential energy

Q26 : What is the spin of a nucleus?

A: Intrinsic angular momentum B: Orbital angular momentum C: Total angular momentum D: Magnetic moment

Q27 : What is a main sequence star?

A: A star that is fusing hydrogen into helium B: A star that has exhausted its fuel C: A star that is expanding D: None

Q28 : What is the half-life of a radioactive substance?

A: Time for half of the substance to decay B: Time for all of the substance to decay C: Time for the substance to become stable D: Time for the substance to change its chemical properties

Q29 : What is the shielding material for gamma radiation?

A: Paper B: Aluminum C: Lead D: Concrete

Q30 : What is the difference between elastic and inelastic scattering?

A: Elastic scattering involves a change in energy, inelastic scattering does not B: Elastic scattering does not involve a change in energy, inelastic scattering does C: Elastic scattering is a physical change, inelastic scattering is a chemical change D: Elastic scattering is a chemical change, inelastic scattering is a physical change

Q31 : What is the energy dissipated by a resistor with a power of 10W and a time of 2s?

A: 5J B: 10J C: 20J D: None

Q32 : What is the concept of dark matter?

A: Invisible matter that affects galaxy rotation B: Visible matter that affects galaxy rotation C: Both a & b D: None

Q33 : What is a Thevenin equivalent circuit?

A: A simplified circuit with a single voltage source and resistance B: A circuit with multiple voltage sources C: A circuit with multiple resistances D: None

Q34 : What is a voltage divider?

A: A circuit that divides the voltage into two or more parts B: A circuit that increases the voltage C: A circuit that decreases the current D: None

Q35 : What is the mass defect of iron-56?

A: 0.528 amu B: 0.528 MeV C: 0.528 kg D: 0.528 J

Q36 : What is a series circuit?

A: Components are connected one after the other B: Components are connected between the same two points C: Components are connected in a loop D: None

Q37 : What is the threshold energy of a nuclear reaction?

A: Minimum energy required for the reaction to occur B: Maximum energy required for the reaction to occur C: Energy released in the reaction D: Energy absorbed in the reaction

Q38 : What is the unit of radioactivity?

A: Becquerel B: Curie C: Gray D: Sievert

Q39 : What is the concept of supernova remnant?

A: Remains of supernova explosion B: Remains of star formation C: Both a & b D: None

Q40 : What is the Reynolds number used for?

A: Predicting flow pattern B: Predicting pressure drop C: Predicting flow velocity D: None

Q41 : What is the relationship between voltage, current, and power?

A: P = VI B: P = V/I C: P = I/V D: None

Q42 : What is the difference between gauge pressure and absolute pressure?

A: Gauge pressure is the pressure above atmospheric pressure, while absolute pressure is the pressure B: Gauge pressure is the pressure below atmospheric pressure, while absolute pressure is the pressure above atmospheric pressure C: Gauge pressure is the pressure above atmospheric pressure, while absolute pressure is the total pressure D: Gauge pressure is the total pressure, while absolute pressure is the pressure above atmospheric pressure

Q43 : What is the multiverse hypothesis?

A: The idea that there are multiple universes B: The idea that there is only one universe C: The idea that the universe is infinite D: None

Q44 : What is the superposition theorem used for in electric circuits?

A: To find the voltage across a component B: To find the current through a component C: To simplify the analysis of a circuit with multiple sources D: None

Q45 : What is the application of NMR in medicine?

A: Imaging B: Spectroscopy C: Therapy D: Diagnosis

Q46 : A circuit has a voltage source and a resistor in parallel. What is the current through the resistor?

A: Equal to the voltage source B: Equal to the resistor value C: Equal to the voltage divided by resistance D: None

Q47 : What is the name of the largest volcano in our solar system?

A: Olympus Mons B: Mount Everest C: Mount Kilimanjaro D: None

Q48 : What is the concept of velocity potential?

A: Scalar function representing velocity B: Vector function representing velocity C: Both a & b D: None

Q49 : What is the limitation of using KCL in circuit analysis?

A: Assumes ideal components B: Assumes lumped parameters C: Not applicable to high-frequency circuits D: All of the above

Q50 : What is the equation for capillary rise? a equation?

A: h = 2T cosθ / ρgr B: h = 2T sinθ / ρgr C: h = 2T / ρgr D: None

Q51 : What is the role of neutrons in nuclear fission?

A: To initiate the reaction B: To slow down the reaction C: To absorb excess energy D: To emit radiation

Q52 : What is the application of radioactivity in medicine?

A: Diagnosis B: Treatment C: Research D: All of the above

Q53 : Which planet has the most extreme temperature variations?

A: Mercury B: Venus C: Both a & b D: None

Q54 : What is the concept of reionization?

A: Period of universe when gas ionized B: Period of universe when gas neutral C: Both a & b D: None

Q55 : What is the advantage of using KVL in circuit analysis?

A: Simplifies circuit analysis B: Provides accurate results C: Applicable to complex circuits D: All of the above

Q56 : What is a binary star system?

A: Two stars orbiting each other B: A star and a planet C: A planet and a moon D: None

Q57 : What is mass defect?

A: Difference between the mass of a nucleus and the sum of the masses of its constituent nucleons B: Difference between the mass of a nucleus and the mass of an atom C: Difference between the mass of a nucleus and the mass of an electron D: Difference between the mass of a nucleus and the mass of an electron

Q58 : What is the main component of the nucleus?

A: Protons and neutrons B: Electrons and protons C: Electrons and neutrons D: None

Q59 : What is a mesh in an electric circuit?

A: A loop that contains no other loops B: A path between two nodes C: A component that generates electricity D: None

Q60 : What is the surface tension?

A: The force acting along the surface of a liquid B: The force acting perpendicular to the surface of a liquid C: The force acting at an angle to the surface of a liquid D: The force acting inside a liquid

Q61 : Which planet is known as the "Morning Star"?

A: Mercury B: Venus C: Mars D: None

Q62 : What is electron capture?

A: Capture of an electron by a nucleus B: Emission of an electron from a nucleus C: Capture of a positron by a nucleus D: Emission of a positron from a nucleus

Q63 : What is Compton scattering?

A: Scattering of photons by a nucleus B: Scattering of electrons by a nucleus C: Scattering of charged particles by a nucleus D: Scattering of neutral particles by a nucleus

Q64 : What is the average temperature of Mars?

A: -20°C B: -50°C C: -67°C D: None

Q65 : What is the condition for an object to float in a fluid?

A: The density of the object is greater than the density of the fluid B: The density of the object is less than the density of the fluid C: The density of the object is equal to the density of the fluid D: The density of the object is unrelated to the density of the fluid

Q66 : What is alpha decay?

A: Emission of an electron B: Emission of a photon C: Emission of a helium nucleus D: Emission of a neutron

Q67 : What is the most stable nucleus?

A: Iron-56 B: Nickel-62 C: Oxygen-16 D: Helium-4

Q68 : What is buoyancy?

A: Upward force on an object B: Downward force on an object C: Both a & b D: None

Q69 : A 10Ω and a 20Ω resistor are connected in parallel. What is the total resistance?

A: 5Ω B: 6.67Ω C: 30Ω D: None

Q70 : What is the concept of stability of a floating body?

A: Body returns to original position B: Body moves to new position C: Both a & b D: None

Q71 : What is the most stable isotope of helium?

A: Helium-3 B: Helium-5 C: Helium-4 D: Helium-6

Q72 : What is the difference between a nuclear reaction and a nuclear scattering?

A: Nuclear reaction involves a change in the nucleus, nuclear scattering does not B: Nuclear reaction does not involve a change in the nucleus, nuclear scattering does C: Nuclear reaction is a physical change, nuclear scattering is a chemical change D: Nuclear reaction does not involve a change in the nucleus, nuclear scattering does

Q73 : What is the concept of center of pressure?

A: Point where pressure acts B: Point where weight acts C: Both a & b D: None

Q74 : What is the total resistance of a circuit with three 10Ω resistors in series?

A: 10Ω B: 20Ω C: 30Ω D: None

Q75 : What is a fluid?

A: A substance that can flow B: A substance that cannot flow C: A substance that is always at rest D: A substance that is always in motion

Q76 : A circuit has a node with two currents entering: 3A and 4A. What is the current leaving the node?

A: 1A B: 5A C: 7A D: None

Q77 : What is the drag force?

A: The force exerted on an object by a fluid in the direction of motion B: The force exerted on an object by a fluid opposite to the direction of motion C: The force exerted on an object by a fluid perpendicular to the direction of motion D: The force exerted on an object by a fluid at an angle to the direction of motion

Q78 : A circuit has two 10Ω resistors in parallel. What is the total resistance?

A: 5Ω B: 10Ω C: 20Ω D: None

Q79 : In a series circuit, the current is:

A: The same through all components B: Different through each component C: Both a & b D: None

Q80 : What is the electron configuration of helium?

A: 1s^1 B: 1s^2 C: 2s^2 D: None

Q81 : Which planet has a highly eccentric orbit?

A: Mercury B: Mars C: Pluto D: None

Q82 : A circuit has a current source and a resistor in series. What is the power dissipated by the resistor?

A: Equal to the current source B: Equal to the resistor value C: Equal to the product of current and voltage D: None

Q83 : What is the Large Hadron Collider used for in cosmology?

A: To study the early universe B: To study dark matter C: To study dark energy D: None

Q84 : What is nuclear fusion?

A: Splitting of a nucleus into two or more smaller nuclei B: Combination of two or more nuclei into a single nucleus C: Emission of radiation from a nucleus D: Absorption of radiation by a nucleus

Q85 : What is the instrument used to measure atmospheric pressure?

A: Barometer B: Manometer C: Thermometer D: None

Q86 : What is the risk associated with radioactivity?

A: Radiation exposure B: Nuclear explosion C: Environmental contamination D: All of the above

Q87 : What is the name of the spacecraft that landed on Mars in 2012?

A: Curiosity B: Spirit C: Opportunity D: None

Q88 : What is the ionization energy trend in a period?

A: Increases B: Decreases C: Remains same D: None

Q89 : What is the equation for stream function?

A: ψ = ∫(v⋅ds) B: ψ = ∫(v×ds) C: ψ = ∫(v⋅dr) D: None

Q90 : What is the life cycle of a star?

A: Protostar, main sequence, red giant, white dwarf B: Main sequence, red giant, protostar, white dwarf C: Protostar, red giant, main sequence, white dwarf D: None

Q91 : A circuit has a voltage of 12V and a resistance of 4Ω. What is its current?

A: 1A B: 2A C: 3A D: All of the above

Q92 : What is the Reynolds number used for?

A: Predicting flow pattern B: Predicting pressure drop C: Predicting flow velocity D: None

Q93 : What is the total resistance of a parallel circuit?

A: The reciprocal of the sum of reciprocals B: The sum of individual resistances C: The product of individual resistances D: None

Q94 : What is the ALARA principle?

A: As Low As Reasonably Achievable B: As High As Reasonably Achievable C: As Low As Reasonably Acceptable D: As High As Reasonably Acceptable

Q95 : What is the relationship between conductance and resistance?

A: G = 1/R B: G = R C: G = R^2 D: None

Q96 : What is a red giant?

A: A star that has expanded and cooled B: A star that has shrunk and heated up C: A planet with a solid surface D: None

Q97 : What are the three types of radioactive decay?

A: Alpha, beta, gamma B: Alpha, beta, delta C: Gamma, delta, epsilon D: Alpha, gamma, omega

Q98 : What is the concept of gauge pressure?

A: Pressure relative to atmospheric pressure B: Pressure relative to vacuum C: Both a & b D: None

Q99 : What is the pressure exerted by a fluid at equilibrium?

A: Dynamic pressure B: Static pressure C: Hydrostatic pressure D: None

Q100 : What is the concept of vortex?

A: Rotating fluid motion B: Irrotational fluid motion C: Both a & b D: None

Free Physics MCQs Mock Test Online with Answers

Time to prove what you know!

LAT Test

GAT Test

Contact Info

Free Physics MCQs Mock Test Online with Answers

Subscribe our Newsletter

LAT Test

GAT Test

Contact Info