Free Physics MCQs Mock Test Online with Answers

Q1 : What is the power dissipated by a resistor with a resistance of 10Ω and a current of 2A?

A: 20W B: 40W C: 80W D: None

Q2 : What is the concept of velocity potential?

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

Q3 : A resistor has a resistance of 5Ω and a current of 3A. What is its voltage?

A: 5V B: 10V C: 15V D: None

Q4 : 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

Q5 : What is the range of alpha radiation in air?

A: 1-2 cm B: 1-2 m C: 1-2 km D: Infinite

Q6 : What is the study of fluids at rest called?

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

Q7 : What is internal conversion?

A: Emission of a gamma ray from a nucleus B: Emission of an electron from a nucleus C: Capture of an electron by a nucleus D: Transfer of energy from a nucleus to an electron

Q8 : What is the concept of stream function?

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

Q9 : 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

Q10 : What is the concept of meteor?

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

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

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

Q12 : What is the Pauli exclusion principle?

A: No two electrons have same quantum numbers B: Two electrons have same quantum numbers C: Both a & b D: None

Q13 : What is the asteroid belt?

A: Region between Mars and Jupiter B: Region between Earth and Mars C: Region between Jupiter and Saturn D: None

Q14 : 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

Q15 : What is the concept of comet?

A: Small, icy body in solar system B: Large, icy body in solar system C: Both a & b D: None

Q16 : 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

Q17 : A circuit has a node with three currents entering: 2A, 3A, and 4A. What is the sum of currents leaving the node?

A: 2A B: 3A C: 9A D: None

Q18 : 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

Q19 : What is the mass number equal to?

A: Protons + neutrons B: Protons + electrons C: Neutrons + electrons D: None

Q20 : What is the energy source of stars?

A: Nuclear fission B: Nuclear fusion C: Radioactivity D: Chemical reactions

Q21 : What is the most common type of nuclear reaction?

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

Q22 : What is the name of the process by which two or more nuclei combine to form a single nucleus?

A: Nuclear fission B: Nuclear fusion C: Radioactivity D: Ionization

Q23 : 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

Q24 : 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

Q25 : What is the concept of aerodynamic lift?

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

Q26 : What is a nuclear isomer?

A: A nucleus in an excited state B: A nucleus in a ground state C: A nucleus in a metastable state D: A nucleus in a stable state

Q27 : What is the concept of surface tension?

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

Q28 : A circuit has a 10Ω resistor and a 20Ω resistor in parallel. What is the total power dissipated?

A: 10W B: 20W C: 60W D: None

Q29 : Who proposed the nuclear model of the atom?

A: Rutherford B: Thomson C: Bohr D: None

Q30 : 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

Q31 : What is the instrument used to measure pressure?

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

Q32 : What is the relationship between energy and power?

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

Q33 : 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

Q34 : What is the disadvantage of a parallel circuit?

A: Components have different currents B: Components share the same voltage C: More complex wiring D: None

Q35 : What is cosmology?

A: Study of the origin and evolution of the universe B: Study of the structure of the universe C: Study of the stars and galaxies D: None

Q36 : What is the age of the universe?

A: 13.8 billion years B: 4.5 billion years C: 1 billion years D: None

Q37 : What is the concept of white dwarf?

A: Small, hot, and dense star B: Large, cool, and dense star C: Both a & b D: None

Q38 : In a parallel circuit, the voltage is:

A: The same across all components B: Different across each component C: Zero D: None of these

Q39 : What is the risk associated with radioactivity?

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

Q40 : What is the relationship between KCL and KVL?

A: KCL is used for nodes, KVL is used for loops B: KCL is used for loops, KVL is used for nodes C: KCL and KVL are interchangeable D: None

Q41 : What is the unit of current in KCL?

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

Q42 : What is the difference between a nuclear reaction and a chemical reaction?

A: Nuclear reaction involves the nucleus, chemical reaction involves electrons B: Nuclear reaction involves electrons, chemical reaction involves the nucleus C: Nuclear reaction is a physical change, chemical reaction is a chemical change D: Nuclear reaction is a chemical change, chemical reaction is a physical change

Q43 : What is the azimuthal quantum number?

A: l B: n C: m D: None

Q44 : 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

Q45 : What is the concept of isotopes?

A: Atoms with same protons but different neutrons B: Atoms with same neutrons but different protons C: Both a & b D: None

Q46 : What is the concept of oscillation of a floating body?

A: Body moves up and down B: Body moves side to side C: Both a & b D: None

Q47 : What is the concept of presentism?

A: The idea that only the present moment exists B: The idea that all moments in time exist simultaneously C: The idea that the universe is dynamic D: None

Q48 : 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

Q49 : 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

Q50 : What is the binding energy per nucleon of uranium-238?

A: 7.57 MeV B: 6.4 MeV C: 5.2 MeV D: 4.5 MeV

Q51 : What is the pressure exerted by a fluid at equilibrium?

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

Q52 : What is the difference between the liquid drop model and the shell model?

A: The liquid drop model is a macroscopic model, while the shell model is a microscopic model B: The liquid drop model is a microscopic model, while the shell model is a macroscopic mod C: The liquid drop model is used to calculate the binding energy, while the shell model is used to calculate the nuclear radius D: None of the above

Q53 : What is the equation for time period of oscillation?

A: T = 2π √(I/mgGM) B: T = 2π √(mgGM/I) C: T = 2π √(I/mGM) D: None

Q54 : What is the instrument used to measure atmospheric pressure?

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

Q55 : 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

Q56 : What is the concept of gauge pressure?

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

Q57 : What is the shielding material for gamma radiation?

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

Q58 : What is the capillary action?

A: The rise of a liquid in a narrow tube B: The fall of a liquid in a narrow tube C: The flow of a liquid in a wide tube D: The flow of a liquid in a narrow tube

Q59 : What is the concept of asteroid belt?

A: Region of asteroids in solar system B: Region of planets in solar system C: Both a & b D: None

Q60 : What is the ionization energy trend in a period?

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

Q61 : What is a galaxy?

A: A collection of stars, gas, and dust B: A single star with planets C: A planet with moons D: None

Q62 : What is the mass defect of uranium-238?

A: 1.934 amu B: 1.934 MeV C: 1.934 kg D: 1.934 J

Q63 : What is the closest star to Earth?

A: Sun B: Moon C: Alpha Centauri D: None

Q64 : What is the concept of an open universe?

A: A universe with an infinite volume and no boundaries B: A universe with a finite volume and no boundaries C: A universe with a finite volume and boundaries D: None

Q65 : A resistor has a voltage of 5V and a resistance of 10Ω. What is its current?

A: 0.1A B: 0.5A C: 1A D: None

Q66 : What is the unit of buoyant force?

A: Newton B: Pascal C: Joule D: None

Q67 : 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

Q68 : 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

Q69 : What is the concept of neutral buoyancy?

A: Object floats at surface B: Object sinks to bottom C: Object remains suspended D: None

Q70 : What is the charge of an electron?

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

Q71 : What is the unit of electric current?

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

Q72 : What is the energy released in a nuclear reaction?

A: Binding energy B: Kinetic energy C: Potential energy D: Thermal energy

Q73 : What is buoyancy?

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

Q74 : What is the condition for neutral buoyancy?

A: Density of object equals fluid density B: Density of object is greater than fluid density C: Density of object is less than fluid density D: None

Q75 : What is a quasar?

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

Q76 : What is the concept of flow net?

A: Graphical representation of flow B: Mathematical representation of flow C: Both a & b D: None

Q77 : What is the concept of resonance?

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

Q78 : What is the pressure exerted by a fluid at equilibrium?

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

Q79 : What is an inductor?

A: A component that stores energy in a magnetic field B: A component that opposes electric current C: A component that generates electricity D: None

Q80 : What is the unit of power?

A: Watt (W) B: Ampere (A) C: Volt (V) D: None

Q81 : 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

Q82 : What is the concept of lift force?

A: Force perpendicular to motion B: Force parallel to motion C: Both a & b D: None

Q83 : What is the most common type of nuclear decay?

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

Q84 : What is the Big Bang theory?

A: The universe began as a single point and expanded B: The universe has always existed in its current form C: The universe was created by a god D: None

Q85 : Who proposed the planetary model of the atom?

A: Bohr B: Rutherford C: Thomson D: None

Q86 : What is the concept of multiverse?

A: Many universes exist B: One universe exists C: Both a & b D: None

Q87 : What is the largest planet in our solar system?

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

Q88 : What is laminar flow?

A: Smooth, continuous flow of a fluid B: Turbulent, irregular flow of a fluid C: Flow of a fluid at high velocity D: Flow of a fluid at low velocity

Q89 : 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

Q90 : What is the cosmic inflation theory?

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

Q91 : What is the name of the spacecraft that is currently exploring the outer reaches of our solar system?

A: Voyager 1 B: Voyager 2 C: New Horizons D: None

Q92 : What is the difference between a nuclear reaction and a nuclear decay?

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

Q93 : In a series circuit, if one component fails:

A: The entire circuit is broken B: The other components continue to work C: The circuit becomes a parallel circuit D: None

Q94 : What is the unit of viscosity?

A: Poise B: Pascal-second C: Both a & b D: None

Q95 : 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

Q96 : What is radiation protection?

A: Measures to reduce radiation exposure B: Measures to increase radiation exposure C: Measures to eliminate radiation exposure D: Measures to ignore radiation exposure

Q97 : What is a star cluster?

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

Q98 : What is a nuclear reaction?

A: A reaction involving the nucleus of an atom B: A reaction involving the electrons of an atom C: A reaction involving the molecules of a substance D: A reaction involving the ions of a substance

Q99 : Which planet has the most extreme temperature variations?

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

Q100 : What is the magnetic quantum number?

A: m B: l C: n D: None

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