Physics questions This is a list of recently added questions about physics. Play physics quiz and see all the questions. The idea that the nascent universe passes through the phase of exponential expansion, which was driven by the positive density of vacuum energy, is called;Cosmic inflation. Alan Guth formally proposed the idea of cosmic inflation in 1981, the idea that the nascent universe passed through a phase of exponential expansion that was driven by a positive vacuum energy density (negative vacuum pressure).Created by: Tschuka very hard 26% Cosmic inflationCosmic inflation1253Grand unification theoryGrand unification theory1201Theory of SupersymmetryTheory of Supersymmetry718All answers are correct.All answers are correct.1476universe riddles » The bright circle around the Sun seen in the picture is known as a halo. What causes it?Refraction of light in ice crystals. Halo is the name for a family of optical phenomena produced by light interacting with ice crystals suspended in the atmosphere. Halos can have many forms, ranging from colored or white rings to arcs and spots in the sky. Among the best known halo types are the circular halo (properly called the 22° halo), Other common optical phenomena involving water droplets rather than ice crystals include the glory and the rainbow. Created by: Tschuka very hard 35% refraction of light in ice crystalsrefraction of light in ice crystals3369refraction in the lens of the eye or lensrefraction in the lens of the eye or lens2984refraction of light in water dropsrefraction of light in water drops2409reflections from the water surfacereflections from the water surface651atmosphere riddles » John Bardeen, Walter Houser Brattain and William Bradford Shockley received the Nobel Prize in Physics in 1956 for the invention of:Transistor. The transistor heralded in the “Information Age” and paved the way for the development of almost every electronic device, from radios to computers to space shuttles. For their monumental “researches on semiconductors and their discovery of the transistor effect,"4 Bardeen, Shockley and Brattain were presented with the Nobel Prize in Physics in 1956.Created by: Tschuka hard 44% dimmerdimmer718resistorresistor929optical fiberoptical fiber683transistortransistor1856Nobel prize riddles » Which device converts electricity into acoustic energy?Headphones are a pair of small loudspeaker drivers worn on or around the head over a user's ears. They are electroacoustic transducers, which convert an electrical signal to a corresponding sound. Created by: Tschuka hard 47% MicrophoneMicrophone1404HeadphoneHeadphone3552AmplifierAmplifier2185PreamplifierPreamplifier403electronics riddles » Which device converts an acoustic wave into an electrical signal?Microphone. A microphone, colloquially nicknamed mic or mike is a transducer that converts sound into an electrical signal. Microphones typically need to be connected to a preamplifier before the signal can be recorded or reproduced.Created by: Tschuka hard 56% HeadphonesHeadphones751LoudspeakerLoudspeaker886MicrophoneMicrophone4513AmplifierAmplifier1864technology riddles » Who invented spectroscope?Joseph van Fraunhofer. Joseph Ritter von Fraunhofer was a Bavarian physicist and optical lens manufacturer. He made optical glass and achromatic telescope objective lenses, invented the spectroscope, and developed diffraction grating. Created by: Ninjaivery hard 30% Issac NewtonIssac Newton1092William HerschelWilliam Herschel1374Joseph van FraunhoferJoseph van Fraunhofer1787Edwin HubbleEdwin Hubble1620inventions riddles » Who discovered radioactivity?Henri Becquerel. Antoine Henri Becquerel (15 December 1852 – 25 August 1908) was a French physicist, Nobel laureate, and the first person to discover evidence of radioactivity. For work in this field he, along with Marie Skłodowska-Curie and Pierre Curie, received the 1903 Nobel Prize in Physics. The SI unit for radioactivity, the becquerel (Bq), is named after him.Created by: Tschuka very hard 26% Henri BecquerelHenri Becquerel94Max PlanckMax Planck32Ernest RutherfordErnest Rutherford97Maria Skłodowska-CurieMaria Skłodowska-Curie135discoverers riddles » Who received the first Nobel Prize in physics in 1901?Wilhelm Röntgen. Wilhelm Conrad Röntgen German: was a German mechanical engineer and physicist, who, on 8 November 1895, produced and detected electromagnetic radiation in a wavelength range known as X-rays or Röntgen rays, an achievement that earned him the first Nobel Prize in Physics in 1901.Created by: Tschuka hard 46% Maria Skłodowska-CurieMaria Skłodowska-Curie1184Albert EinsteinAlbert Einstein1121Wilhelm RöntgenWilhelm Röntgen2571Henri BecquerelHenri Becquerel654discoveries riddles » Which Greek inventor is called the "father of pneumatics"?Ctesibius or Ktesibios or Tesibius was a Greek inventor and mathematician in Alexandria, Ptolemaic Egypt. He wrote the first treatises on the science of compressed air and its uses in pumps (and even cannons). This, in combination with his work on the elasticity of air, earned him the title of "father of pneumatics." Created by: Tschuka very hard 29% CtesibiusCtesibius189PlatonPlaton49AristotleAristotle124None of the above, the concept of pneumatics is RomanNone of the above, the concept of pneumatics is Roman276technical riddles » Which of these is not one of the basic units of the SI system?V (volt). The International System of Units (abbreviated as SI) is the modern form of the metric system, and is the most widely used system of measurement. It comprises a coherent system of units of measurement built on seven base units (ampere, kelvin, second, metre, kilogram, candela, mole) and a set of twenty decimal prefixes to the unit names and unit symbols.Created by: Tschuka very hard 31% V (volt)V (volt)891A (ampere)A (ampere)228MoleMole935Cd (candela)Cd (candela)757technology riddles » Play physics quiz and see all the questions.