Free Physics MCQs Mock Test Online with Answers

Q1 : A circuit has three nodes. How many KCL equations can be written?

A: 1 B: 2 C: 3 D: None

Q2 : What is the risk associated with nuclear power plants?

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

Q3 : What is the relationship between binding energy and mass defect?

A: Binding energy is equal to the mass defect B: Binding energy is proportional to the mass defect C: Binding energy is inversely proportional to the mass defect D: Binding energy is unrelated to the mass defect

Q4 : What is the binding energy of a nucleus?

A: Energy required to disassemble the nucleus B: Energy released when the nucleus is formed C: Energy required to add a nucleon to the nucleus D: Energy released when a nucleon is removed from the nucleus

Q5 : 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

Q6 : What is the equation for buoyancy in gases?

A: F_b = ρVg B: F_b = ρV/g C: F_b = ρg/V D: None

Q7 : What is the concept of velocity gradient?

A: Change in velocity with distance B: Change in velocity with time C: Change in pressure with distance D: None

Q8 : What is the average temperature of Mars?

A: -20°C B: -50°C C: -67°C D: None

Q9 : What is a galaxy cluster?

A: A group of galaxies B: A group of stars C: A group of planets D: None

Q10 : What is the concept of resonance?

A: Amplitude is maximum B: Amplitude is minimum C: Both a & b D: None

Q11 : What is the largest planet in our solar system?

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

Q12 : What is the concept of black hole information paradox?

A: Information lost in black hole B: Information not lost in black hole C: Both a & b D: None

Q13 : What is the difference between nuclear binding energy and nuclear potential energy?

A: Nuclear binding energy is the energy required to separate a nucleus into its constituent nucleons, while nuclear potential energy is the energy required to add a nucleon to a nucleus B: Nuclear binding energy is the energy required to add a nucleon to a nucleus, while nuclear potential energy is the energy required to separate a nucleus into its constituent nucleons C: Nuclear binding energy is the energy released when a nucleus is formed from its constituent nucleons, while nuclear potential energy is the energy required to separate a nucleus into its constituent nucleons D: Nuclear binding energy is the energy required to separate a nucleus into its constituent nucleons, while nuclear potential energy is the energy released when a nucleus is formed from its constituent nucleons

Q14 : 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

Q15 : 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

Q16 : What is radioactivity?

A: Emission of radiation from a nucleus B: Absorption of radiation by a nucleus C: Reflection of radiation by a nucleus D: Transmission of radiation through a nucleus

Q17 : What is the study of fluids at rest called?

A: Fluid dynamics B: Fluid statics C: Hydrodynamics D: Aerodynamics

Q18 : What is the principle of buoyancy?

A: The upward force on an object is equal to the weight of the fluid displaced B: The downward force on an object is equal to the weight of the fluid displaced C: he upward force on an object is equal to the pressure of the fluid D: The downward force on an object is equal to the pressure of the fluid

Q19 : What is the concept of apparent weight?

A: Weight of object in air B: Weight of object in fluid C: Both a & b D: None

Q20 : What is the mass defect of a nucleus?

A: Difference between the mass of the nucleus and the sum of the masses of its constituents B: Difference between the mass of the nucleus and the mass of the atom C: Difference between the mass of the nucleus and the mass of the electron D: Difference between the mass of the nucleus and the mass of the proton

Q21 : 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

Q22 : What is the concept of viscosity?

A: Resistance to flow B: Resistance to deformation C: Both a & b D: None

Q23 : What is the atomic radius trend in a group?

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

Q24 : What is the charge of an electron?

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

Q25 : What is the concept of cosmological inflation?

A: The universe underwent a rapid expansion in the early stages B: The universe has always been expanding at a steady rate C: The universe is contracting D: None

Q26 : What is the condition for an object to float?

A: Density of object is less than fluid B: Density of object is greater than fluid C: Both a & b D: None

Q27 : What is the mass defect of iron-56?

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

Q28 : What is the spin quantum number?

A: s B: m_s C: Both a & b D: None

Q29 : What is binding energy?

A: Energy required to separate a nucleus into its constituent nucleons B: Energy released when a nucleus is formed from its constituent nucleons C: Energy required to add a nucleon to a nucleus D: Energy released when a nucleon is removed from a nucleus

Q30 : What is pair annihilation?

A: Creation of a particle-antiparticle pair from a photon B: Creation of a particle-antiparticle pair from a nucleus C: Annihilation of a particle-antiparticle pair to produce a photon D: Annihilation of a particle-antiparticle pair to produce a nucleus

Q31 : What is the difference between a wetting and a non-wetting liquid?

A: A wetting liquid has a contact angle of 0°, while a non-wetting liquid has a contact angle of 180° B: A wetting liquid has a contact angle of 180°, while a non-wetting liquid has a contact angle of 0° C: A wetting liquid has a contact angle of 90°, while a non-wetting liquid has a contact angle of 90° D: A wetting liquid has a contact angle of 45°, while a non-wetting liquid has a contact angle of 135°

Q32 : What is the equation for surface tension?

A: σ = F/L B: σ = F/A C: σ = E/A D: None

Q33 : What is the concept of pathline?

A: Path traced by a fluid particle B: Path traced by a solid particle C: Both a & b D: None

Q34 : What is the Kuiper Belt?

A: Region of icy bodies B: Region of rocky bodies C: Region of gas giants D: None

Q35 : What is the concept of positive buoyancy?

A: Object floats B: Object sinks C: Object remains suspended D: None

Q36 : 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

Q37 : What is the name of the spacecraft that landed on Mars in 2012?

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

Q38 : What is the advantage of a parallel circuit?

A: Components can be turned on/off independently B: Components share the same current C: Components have the same voltage D: None

Q39 : What is the concept of surface tension?

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

Q40 : 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

Q41 : What is the condition for stability of a floating object?

A: Metacenter is above center of gravity B: Metacenter is below center of gravity C: Both a & b D: None

Q42 : What is the unit of mass defect?

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

Q43 : What is the total resistance of a circuit with three 10Ω resistors in series?

A: 10Ω B: 20Ω C: 30Ω D: None

Q44 : What is the most common type of nuclear reaction used in energy production?

A: Fission B: Fusion C: Radioactive decay D: Nuclear scattering

Q45 : What is the condition for stability of a floating object?

A: Metacenter is above center of gravity B: Metacenter is below center of gravity C: Both a & b D: None

Q46 : What is the concept of damping of oscillation?

A: Reduction in amplitude B: Increase in amplitude C: Both a & b D: None

Q47 : 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

Q48 : What is the concept of equipotential line?

A: Line of constant velocity potential B: Line of constant stream function C: Line of constant pressure D: None

Q49 : What is a supernova?

A: An explosion of a star B: A collision of two galaxies C: A formation of a black hole D: None

Q50 : What is the electron configuration of helium?

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

Q51 : 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

Q52 : What is the concept of laminar flow?

A: Fluid flows in layers B: Fluid flows turbulently C: Both a & b D: None

Q53 : What is the largest asteroid in the asteroid belt?

A: Ceres B: Pallas C: Vesta D: None

Q54 : What is the relationship between voltage, current, and power?

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

Q55 : 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

Q56 : 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

Q57 : What is the difference between Newtonian and non-Newtonian fluids?

A: Newtonian fluids have a constant viscosity, while non-Newtonian fluids do not B: Newtonian fluids have a variable viscosity, while non-Newtonian fluids do not C: Newtonian fluids are compressible, while non-Newtonian fluids are not D: Newtonian fluids are incompressible, while non-Newtonian fluids are compressible

Q58 : What is buoyancy?

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

Q59 : What is the unit of voltage in KVL?

A: Volt (V) B: Ampere (A) C: Ohm (Ω) D: None

Q60 : What is the concept of galaxy evolution?

A: Change in galaxy over time B: Change in star over time C: Both a & b D: None

Q61 : 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

Q62 : 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

Q63 : What is the most common type of nuclear decay?

A: Alpha decay B: Beta decay C: Gamma decay D: Electron capture

Q64 : What is the unit of radiation dose?

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

Q65 : What is beta decay?

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

Q66 : What is the difference between ionizing and non-ionizing radiation?

A: Ionizing radiation has higher energy B: Ionizing radiation has lower energy C: Ionizing radiation is more penetrating D: Ionizing radiation is less penetrating

Q67 : What is the mass defect of helium-4?

A: 0.0304 amu B: 0.0304 MeV C: 0.0304 kg D: 0.0304 J

Q68 : What is the unit of conductance?

A: Siemens (S) B: Ohm (Ω) C: Ampere (A) D: None

Q69 : 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

Q70 : What is the concept of capillary rise?

A: Rise of fluid in a narrow tube B: Fall of fluid in a narrow tube C: Both a & b D: None

Q71 : What is the maximum permissible dose of radiation per year?

A: 1 mSv B: 10 mSv C: 50 mSv D: 100 mSv

Q72 : What is the relationship between energy and power?

A: E = Pt B: E = P/t C: E = P + t D: None

Q73 : What is the concept of dark energy?

A: Energy that accelerates universe expansion B: Energy that decelerates universe expansion C: Both a & b D: None

Q74 : What is a short circuit?

A: An unintended path of low resistance B: An intended path of high resistance C: A component that generates electricity D: None

Q75 : What is the concept of pressure head?

A: Height of fluid column B: Pressure exerted by fluid C: Both a & b D: None

Q76 : What is the relationship between half-life and decay constant?

A: Half-life is inversely proportional to decay constant B: Half-life is directly proportional to decay constant C: Half-life is equal to decay constant D: Half-life is unrelated to decay constant

Q77 : What is the galaxy that contains our solar system?

A: Andromeda B: Milky Way C: Triangulum D: None

Q78 : What is the concept of metacenter?

A: Point where buoyant force acts B: Point where weight acts C: Both a & b D: None of the above

Q79 : 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

Q80 : What is the application of NMR in medicine?

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

Q81 : What is a white dwarf?

A: A small, hot, and dense star B: A large, cool, and dense star C: A star that has exploded D: None

Q82 : What is the concept of boundary layer?

A: Layer near surface where velocity changes B: Layer away from surface where velocity is constant C: Both a & b D: None

Q83 : What is the name of the largest asteroid in the asteroid belt?

A: Ceres B: Pallas C: Vesta D: None

Q84 : What is the type of manometer that uses a U-shaped tube?

A: U-tube manometer B: Inclined manometer C: Differential manometer D: None

Q85 : What is the difference between adhesion and cohesion?

A: Adhesion is the attraction between molecules of the same substance, while cohesion is the attraction between molecules of different substances B: Adhesion is the attraction between molecules of different substances, while cohesion is the attraction between molecules of the same substance C: Adhesion is the repulsion between molecules of the same substance, while cohesion is the repulsion between molecules of different substances D: Adhesion is the repulsion between molecules of different substances, while cohesion is the repulsion between molecules of the same substance

Q86 : What is the concept of isobars?

A: Atoms with same mass number but different atomic number B: Atoms with same atomic number but different mass number C: Both a & b D: None

Q87 : What is the concept of stream function?

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

Q88 : What is the name of the largest moon of Neptune?

A: Triton B: Nereid C: Proteus D: None

Q89 : What is radioactive dating?

A: Method of determining the age of a substance B: Method of determining the composition of a substance C: Method of determining the structure of a substance D: Method of determining the properties of a substance

Q90 : What is the concept of black hole?

A: Region with extremely strong gravity B: Region with extremely weak gravity C: Both a & b D: None

Q91 : What is the cosmic microwave background radiation?

A: Remnant heat from the Big Bang B: Radiation from stars C: Radiation from galaxies D: None

Q92 : 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

Q93 : Which planet is known as the "Morning Star"?

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

Q94 : What is the concept of drag force?

A: Force opposing motion B: Force supporting motion C: Both a & b D: None of these

Q95 : 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

Q96 : What is the concept of meteor?

A: Small object entering atmosphere B: Large object entering atmosphere C: Both a & b D: None

Q97 : What is the most common method of radioactive dating?

A: Carbon-14 dating B: Potassium-argon dating C: Uranium-lead dating D: Rubidium-strontium dating

Q98 : What is the nucleus of an atom composed of?

A: Protons and electrons B: Neutrons and electrons C: Protons and neutrons D: Electrons only

Q99 : What is the concept of negative buoyancy?

A: Object sinks B: Object floats C: Object remains suspended D: None

Q100 : What is the Planck satellite used for in cosmology?

A: To study the cosmic microwave background radiation B: To study dark matter C: To study dark energy D: None

Free Physics MCQs Mock Test Online with Answers

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