PHYSICS ONE LINER MCQS
What is the speed of light?
Answer: 3 × 10⁸ m/sWhat is the SI unit of force?
Answer: NewtonWho proposed the law of gravitation?
Answer: Isaac NewtonWhat is the SI unit of energy?
Answer: JouleWhat is the acceleration due to gravity on Earth?
Answer: 9.8 m/s²What is the SI unit of power?
Answer: WattWho discovered X-rays?
Answer: Wilhelm RöntgenWhat is the SI unit of electric current?
Answer: AmpereWhat is the unit of frequency?
Answer: HertzWhat is the formula of work?
Answer: Force × DistanceWho invented the telescope?
Answer: Galileo GalileiWhat is the unit of resistance?
Answer: OhmWhat is the unit of pressure?
Answer: PascalWhat is the value of Planck’s constant?
Answer: 6.63 × 10⁻³⁴ JsWho proposed the theory of relativity?
Answer: Albert EinsteinWhat is the speed of sound in air?
Answer: 343 m/sWhat is the SI unit of charge?
Answer: CoulombWhat is the SI unit of momentum?
Answer: kg·m/sWhat is the SI unit of temperature?
Answer: KelvinWhat is Ohm’s law formula?
Answer: V = IRWhat is the formula for work done?
Answer: W = F × dWhat is the charge of a proton?
Answer: +1eWhat is the unit of magnetic flux?
Answer: Weber (Wb)What device is used to measure atmospheric pressure?
Answer: BarometerWhat is the half-life of a radioactive substance?
Answer: Time taken for half of the atoms to decayWho discovered the neutron?
Answer: James ChadwickWhat is the SI unit of electric charge?
Answer: Coulomb (C)What is the boiling point of water at sea level?
Answer: 100°CWhat is the relationship between mass and energy?
Answer: E = mc²What is the function of a transformer?
Answer: To increase or decrease voltage31.What is the unit of resistance?
Answer: Ohm (Ω)32. What type of mirror is used in a car’s side-view mirror?
Answer: Convex mirror33. What is the formula of momentum?
Answer: p = mv34. What is the SI unit of electric potential difference?
Answer: Volt (V)35. Which gas is used in electric bulbs?
Answer: Argon36. What type of current is supplied to homes?
Answer: Alternating current (AC)37. What is the critical angle in optics?
Answer: Angle at which total internal reflection occurs38. What is the wavelength range of visible light?
Answer: 400–700 nm39. What is the unit of luminous intensity?
Answer: Candela (cd)40. What is the principle of hydraulic brakes?
Answer: Pascal’s Law41.What is the measure of disorder in a system called?
Answer: Entropy42. What is the SI unit of capacitance?
Answer: Farad (F)43. What is the formula of potential energy?
Answer: PE = mgh44. What is the function of a fuse?
Answer: To protect circuits from overload45. What is the value of Planck’s constant?
Answer: 6.626 × 10⁻³⁴ Js46. What is the phenomenon behind the rainbow formation?
Answer: Dispersion of light47. What is the primary source of the Sun’s energy?
Answer: Nuclear fusion48. What is the speed of sound in water?
Answer: 1482 m/s49. What is the formula for density?
Answer: ρ = m/V50. Which scientist discovered the X-ray?
Answer: Wilhelm Roentgen51.What is the SI unit of angular velocity?
Answer: Radian per second (rad/s)52. What is the value of 1 horsepower in watts?
Answer: 746 W53. What is the device used to measure electric current?
Answer: Ammeter54. Who discovered radioactivity?
Answer: Henri Becquerel55. What is the SI unit of torque?
Answer: Newton-meter (N·m)56. Which law explains the buoyant force?
Answer: Archimedes’ Principle57. What is the freezing point of water in Fahrenheit?
Answer: 32°F58. Which electromagnetic wave has the highest frequency?
Answer: Gamma rays59. What is the SI unit of electric field?
Answer: Newton per coulomb (N/C)60. Which device converts AC to DC?
Answer: Rectifier61.What is the acceleration of an object in free fall on Earth?
Answer: 9.8 m/s²62. What is the phenomenon of bending light around corners?
Answer: Diffraction63. Which gas is used in fluorescent tubes?
Answer: Mercury vapor64. What is the SI unit of thermal conductivity?
Answer: W/m·K65. Which scientist is famous for the theory of relativity?
Answer: Albert Einstein66. What is the value of 1 electron volt in joules?
Answer: 1.6 × 10⁻¹⁹ J67. Which law explains the relationship between volume and pressure?
Answer: Boyle’s Law68. What is the time period formula of a simple pendulum?
Answer: T = 2π√(L/g)69. Which phenomenon causes stars to twinkle?
Answer: Atmospheric refraction70. What is the SI unit of inductance?
Answer: Henry (H)71.What is the formula for electric power?
Answer: P = VI72. What is the sound frequency range of human hearing?
Answer: 20 Hz to 20 kHz73. What is the formula of refractive index?
Answer: n = c/v74. Which device measures potential difference?
Answer: Voltmeter75. What is the main component of a solar cell?
Answer: Silicon76. What is the first artificial satellite launched into space?
Answer: Sputnik 177. What is the SI unit of heat energy?
Answer: Joule (J)78. What is the principle of rocket propulsion?
Answer: Newton’s Third Law79. What is the name of the device that stores energy in a magnetic field?
Answer: Inductor80. What is the SI unit of work?
Answer: Joule (J)81.What is the phenomenon behind the blue color of the ocean?
Answer: Scattering of light
82. What is the speed of light in glass?
Answer: ~2 × 10⁸ m/s83. What is the function of a dynamo?
Answer: Converts mechanical energy into electrical energy84. Which law explains the conversion of energy?
Answer: Law of Conservation of Energy85. What is the SI unit of electric potential?
Answer: Volt (V)86. Which planet has the strongest gravitational field?
Answer: Jupiter87. What is the unit of radioactivity?
Answer: Becquerel (Bq)88. What is the SI unit of luminous flux?
Answer: Lumen (lm)89. Which scientist discovered the photoelectric effect?
Answer: Albert Einstein90. What is the phenomenon of sound reflection called?
Answer: Echo91.What is the formula for Coulomb’s law?
Answer: F = k(q₁q₂)/r²92. What is the angle of incidence equal to?
Answer: Angle of reflection93. What is the device used to measure pressure?
Answer: Manometer94. Which type of mirror is used in headlights?
Answer: Concave mirror95. What is the SI unit of radiation dose?
Answer: Gray (Gy)96. What is the principle of fiber optics?
Answer: Total internal reflection97. What is the value of universal gas constant R?
Answer: 8.314 J/mol·K98. What is the function of a capacitor?
Answer: Stores electrical energy99. What is the SI unit of surface tension?
Answer: N/m100. What is the formula of pressure?
Answer: P = F/A101.Which wave does not require a medium?
Answer: Electromagnetic waves102. Who is known as the father of nuclear physics?
Answer: Ernest Rutherford103. What is the SI unit of momentum?
Answer: kg·m/s104. What is the escape velocity on the Moon?
Answer: 2.38 km/s105. What is the SI unit of angular momentum?
Answer: kg·m²/s106. Which scientist proposed the wave theory of light?
Answer: Christiaan Huygens107. What is the half-life formula?
Answer: T½ = 0.693/λ108. What is the SI unit of strain?
Answer: Dimensionless109. What is the typical value of Earth’s magnetic field?
Answer: 25 to 65 µT110. Which device measures electric resistance?
Answer: Ohmmeter111.What is the principle of a hydraulic lift?
Answer: Pascal’s Law112. What is the SI unit of magnetic field strength?
Answer: Tesla (T)113. Which waves are used in mobile communication?
Answer: Radio waves114. Who discovered superconductivity?
Answer: Heike Kamerlingh Onnes115. What is the SI unit of viscosity?
Answer: Pa·s116. What is the formula for mechanical advantage?
Answer: MA = Load / Effort117. What is the wavelength of red light?
Answer: ~700 nm118. Which scientist proposed quantization of energy?
Answer: Max Planck119. What is the unit of gravitational constant G?
Answer: N·m²/kg²120. What is the boiling point of nitrogen?
Answer: −196°C121.What is the formula of power in terms of work?
Answer: P = W/t122. What is the SI unit of angular acceleration?
Answer: rad/s²123. Which law defines the relationship between voltage and current?
Answer: Ohm’s Law124. Which type of motion does a pendulum exhibit?
Answer: Simple harmonic motion125. What is the magnetic field inside a solenoid?
Answer: B = μ₀nI126. Which radiation has the longest wavelength?
Answer: Radio waves127. What is the SI unit of thermal resistance?
Answer: K/W128. What is the principle of seismograph?
Answer: Inertia129. What is the unit of specific heat capacity?
Answer: J/kg·K130. Which scientist discovered cosmic rays?
Answer: Victor Hess131.Which law relates current, voltage, and resistance?
Answer: Ohm’s Law132. What is the formula for potential difference?
Answer: V = W/Q133. Which device converts mechanical energy into electrical energy?
Answer: Generator134. What is the unit of electric resistance?
Answer: Ohm (Ω)135. Which law states that energy cannot be created or destroyed?
Answer: Law of Conservation of Energy136. What is the SI unit of power?
Answer: Watt (W)137. Which particle has no charge?
Answer: Neutron138. What is the speed of sound in water?
Answer: ~1500 m/s139. What is the formula for pressure?
Answer: P = F/A140. Which scientist is known as the father of modern physics?
Answer: Albert Einstein141. What is the SI unit of luminous flux?
Answer: Lumen (lm)142. Which device measures atmospheric pressure?
Answer: Barometer143. What is the formula of frequency?
Answer: f = 1/T144. Which phenomenon explains rainbow formation?
Answer: Refraction and dispersion145. What is the unit of magnetic field strength?
Answer: Tesla (T)146. Which scientist discovered electromagnetic induction?
Answer: Michael Faraday147. What is the function of a capacitor?
Answer: Stores electrical energy148. What is the SI unit of work?
Answer: Joule (J)149. What is the formula of power in terms of work?
Answer: P = W/t150. Which law explains why rockets move forward?
Answer: Newton’s Third Law151.What is the SI unit of torque?
Answer: Newton-meter (N·m)
152. Which instrument measures electric current?
Answer: Ammeter153. What is the formula for gravitational force?
Answer: F = Gm₁m₂/r²154. What is the SI unit of time?
Answer: Second (s)155. Which property of light is used in fiber optics?
Answer: Total internal reflection156. Which scientist introduced the concept of photon?
Answer: Albert Einstein157. What is the value of acceleration due to gravity on Earth?
Answer: 9.8 m/s²158. What is the SI unit of magnetic moment?
Answer: A·m²159. What is the principle of hydraulic brakes?
Answer: Pascal’s Law160. Which scientist discovered superconductivity?
Answer: Heike Kamerlingh Onnes161.What is the SI unit of inductance?
Answer: Henry (H)162. Which phenomenon explains why the sky appears blue?
Answer: Rayleigh scattering163. What is the formula for current?
Answer: I = Q/t164. Which radiation has the highest energy?
Answer: Gamma rays165. What is the formula of escape velocity?
Answer: v = √(2GM/R)166. What is the SI unit of heat?
Answer: Joule (J)167. Which law explains lift force in airplanes?
Answer: Bernoulli’s Principle168. What is the SI unit of electric potential?
Answer: Volt (V)169. Which scientist discovered the photoelectric effect?
Answer: Albert Einstein170. What is the formula for momentum?
Answer: p = mv171.Which waves are used in mobile communication?
Answer: Radio waves172. What is the SI unit of angular velocity?
Answer: Radian per second (rad/s)173. Which phenomenon explains twinkling of stars?
Answer: Atmospheric refraction174. What is the formula for wave speed?
Answer: v = fλ175. Which scientist discovered laws of planetary motion?
Answer: Johannes Kepler176. What is the SI unit of electric field?
Answer: Volt per meter (V/m)177. Which principle is used in hydraulic lifts?
Answer: Pascal’s Law178. What is the value of Boltzmann’s constant?
Answer: 1.38 × 10⁻²³ J/K179. Which device converts sound energy into electrical energy?
Answer: Microphone180. What is the SI unit of capacitance?
Answer: Farad (F)181.What is the SI unit of capacitance?
Answer: Farad (F)182. Which law explains the heating effect of current?
Answer: Joule’s Law183. What is the wavelength range of X-rays?
Answer: 0.01 nm to 10 nm184. Which scientist discovered positron?
Answer: Carl Anderson185. What is the SI unit of thermal conductivity?
Answer: W/m·K186. What is the principle of sonar?
Answer: Reflection of sound waves187. What is the formula for specific heat capacity?
Answer: c = Q/(mΔT)188. Which phenomenon explains mirages in deserts?
Answer: Refraction189. What is the SI unit of angular acceleration?
Answer: rad/s²190. What is the value of electron charge?
Answer: 1.6 × 10⁻¹⁹ C191. Which scientist proposed the atomic model with electrons orbiting the nucleus?
Answer: Niels Bohr192. What is the unit of refractive index?
Answer: Dimensionless193. Which scientist discovered radioactivity?
Answer: Henri Becquerel194. What is the SI unit of magnetic flux density?
Answer: Tesla (T)195. What is the value of the speed of light in air?
Answer: ~3 × 10⁸ m/s196. Which device converts light energy into electricity?
Answer: Solar cell197. What is the SI unit of charge density?
Answer: C/m³198. What is the formula for power in terms of current and voltage?
Answer: P = IV199. Which scientist proposed the uncertainty principle?
Answer: Werner Heisenberg200. What is the main component of a cathode ray tube?
Answer: Electron gun201.What is the SI unit of magnetic flux?
Answer: Weber (Wb)202. Which particles are responsible for electricity?
Answer: Electrons203. What is the formula for kinetic energy?
Answer: KE = ½mv²204. Which scientist discovered the neutron?
Answer: James Chadwick205. What is the formula for work done?
Answer: W = F × d × cosθ206. What is the speed of sound in dry air at 20°C?
Answer: ~343 m/s207. Which instrument measures relative humidity?
Answer: Hygrometer208. What is the SI unit of electric charge?
Answer: Coulomb (C)209. What is the formula for density?
Answer: ρ = m/V210. Which scientist discovered proton?
Answer: Ernest Rutherford211.What is the phenomenon of splitting white light into colors?
Answer: Dispersion212. What is the formula of force in Newton’s Second Law?
Answer: F = ma213. Which property of waves determines loudness of sound?
Answer: Amplitude214. What is the value of acceleration due to gravity on Mars?
Answer: 3.7 m/s²215. What is the SI unit of capacitance?
Answer: Farad (F)216. Which particle carries a negative charge?
Answer: Electron217. What is the function of a transformer?
Answer: Changes AC voltage218. What is the formula for pressure in fluids?
Answer: P = ρgh219. What is the formula for potential energy?
Answer: PE = mgh220. Which scientist discovered X-rays?
Answer: Wilhelm Roentgen221.What is the SI unit of frequency?
Answer: Hertz (Hz)222. What is the function of a fuse?
Answer: Protects circuit from overcurrent223. Which gas is used in incandescent bulbs?
Answer: Argon224. What is the principle behind radar?
Answer: Reflection of radio waves225. What is the SI unit of electric conductance?
Answer: Siemens (S)226. Which scientist discovered the electron?
Answer: J.J. Thomson227. What is the escape velocity from Earth?
Answer: 11.2 km/s228. What is the SI unit of sound intensity?
Answer: W/m²229. What is the formula of centripetal force?
Answer: F = mv²/r230. Which law explains why objects float?
Answer: Archimedes’ Principle231. What is the process of heat transfer without a medium?
Answer: Radiation232. What is the unit of Planck’s constant?
Answer: Joule·second (J·s)233. Which phenomenon explains mirages?
Answer: Refraction234. What is the SI unit of pressure?
Answer: Pascal (Pa)235. What is the boiling point of water in Kelvin?
Answer: 373 K236. Which scientist discovered positron?
Answer: Carl D. Anderson237. What is the value of gravitational acceleration on Jupiter?
Answer: 24.79 m/s²238. What is the function of a spectrometer?
Answer: Measures wavelengths of light239. What is the SI unit of magnetic permeability?
Answer: Henry per meter (H/m)240. What is the formula for power in AC circuits?
Answer: P = VIcosϕ241.What is the SI unit of energy?
Answer: Joule (J)242. Which scientist developed the periodic table?
Answer: Dmitri Mendeleev243. What is the principle of sonar?
Answer: Reflection of sound waves244. Which wave has the shortest wavelength?
Answer: Gamma rays245. What is the SI unit of electric field intensity?
Answer: Volt per meter (V/m)246. What is the main source of solar energy?
Answer: Nuclear fusion247. What is the formula for momentum?
Answer: p = mv248. Which mirror forms a virtual, upright image?
Answer: Plane mirror249. What is the SI unit of angular displacement?
Answer: Radian (rad)250. What is the speed of light in a vacuum?
Answer: 3 × 10⁸ m/s251. Which radiation is used in cancer treatment?
Answer: Gamma rays252. What is the SI unit of resistivity?
Answer: Ohm·meter (Ω·m)253. What is the principle of an electric motor?
Answer: Electromagnetic induction254. What is the phenomenon of bending light in water?
Answer: Refraction255. What is the wavelength of blue light?
Answer: ~450 nm256. What is the SI unit of force?
Answer: Newton (N)257. Which scientist discovered radio waves?
Answer: Heinrich Hertz258. What is the value of universal gravitational constant G?
Answer: 6.674 × 10⁻¹¹ N·m²/kg²259. Which device measures alternating current frequency?
Answer: Frequency meter260. What is the SI unit of luminous intensity?
Answer: Candela (cd)261. Which scientist developed the quantum theory?
Answer: Max Planck262. What is the half-life of Carbon-14?
Answer: 5730 years263. What is the principle of refrigerator cooling?
Answer: Evaporation and compression264. Which law defines electromagnetic induction?
Answer: Faraday’s Law265. What is the SI unit of thermal energy?
Answer: Joule (J)266. What is the formula of force of gravity?
Answer: F = Gm₁m₂/r²267. What is the principle of lever?
Answer: Moments268. What is the SI unit of flux density?
Answer: Tesla (T)269. Which lens is used to correct myopia?
Answer: Concave lens270. What is the value of Planck’s constant?
Answer: 6.626 × 10⁻³⁴ J·s271.What is the unit of magnetic susceptibility?
Answer: Dimensionless272. Which scientist discovered the nucleus of an atom?
Answer: Ernest Rutherford273. What is the SI unit of voltage?
Answer: Volt (V)274. What is the principle of gas turbine?
Answer: Conservation of angular momentum275. Which scientist discovered semiconductors?
Answer: Karl Ferdinand Braun276. What is the SI unit of power?
Answer: Watt (W)277. What is the critical angle in optics?
Answer: Angle where total internal reflection begins278. Which type of lens is used in magnifying glasses?
Answer: Convex lens279. What is the wavelength of visible light range?
Answer: 400–700 nm280. What is the SI unit of entropy?
Answer: J/K281. Which scientist proposed the uncertainty principle?
Answer: Werner Heisenberg282. What is the formula for average speed?
Answer: v = d/t283. What is the SI unit of acceleration?
Answer: m/s²284. Which scientist discovered cathode rays?
Answer: J.J. Thomson285. What is the phenomenon of light traveling in straight lines?
Answer: Rectilinear propagation286. What is the SI unit of wavelength?
Answer: Meter (m)287. Which law explains conservation of momentum?
Answer: Newton’s Third Law288. What is the range of FM radio frequencies?
Answer: 88–108 MHz289. What is the principle of cyclotron?
Answer: Magnetic resonance acceleration290. Which scientist discovered ultraviolet radiation?
Answer: Johann Wilhelm Ritter291. What is the SI unit of inductive reactance?
Answer: Ohm (Ω)292. What is the refractive index of water?
Answer: ~1.33293. Which wave property determines pitch of sound?
Answer: Frequency294. What is the unit of electric flux?
Answer: Volt-meter (V·m)295. Which law governs ideal gas behavior?
Answer: Ideal Gas Law (PV = nRT)296. What is the SI unit of electric power?
Answer: Watt (W)297. What is the effect observed in Doppler radar?
Answer: Doppler Effect298. Which scientist discovered infrared radiation?
Answer: William Herschel299. What is the SI unit of heat capacity?
Answer: Joule per Kelvin (J/K)300. What is the law that explains induced EMF in a conductor?
Answer: Faraday’s Law