Description : Who first theoretically predicted the existence of the positron, a positively charged electron? He received the Nobel Prize in Physics in 1933.
Last Answer : ANSWER: (PAUL ADRIEN MAURICE) DIRAC
Description : If energy of incident photon is greater than the rest mass energy of electron positron pair, the surplus energy is shared by the pair as, a) Potential energy b) Thermal energy c) Electronic energy d) Kinetic energy
Last Answer : d) Kinetic energy
Description : To develop the correct mathematical description of the distribution of radiated energy of a blackbody with respect to wavelength for a given temperature, Planck found it necessary to assume that the molecular ... units or quanta y) radiant energy in a continuous form z) none of the above.
Last Answer : ANSWER: X -- RADIANT ENERGY IN DISCRETE UNITS OR QUANTA
Description : Who received the very first Nobel Prize in physics in 1901 for his discovery of X rays?
Last Answer : William Rontgene
Description : JJ Thomson received the Nobel Prize in physics for the discovery of
Last Answer : Electrons
Description : Which of the following events occurred first? (1) Albert Einstein propounded the General Theory of Relativity (2) Max Planck unveiled the Quantum Theory (3) Marconi first transmitted a wireless signal (4) Madame Marie Curie be-came the first woman Nobel Prize winner
Last Answer : (2) Max Planck unveiled the Quantum Theory Explanation: General Theory of Relativity: a theory of gravitation developed by Einstein in the years 1907-1915; Quantum Theory of Max Planck: 1900; ... woman Nobel Prize winner: shared her 1903 Nobel Prize in Physics with her husband Pierre Curie.
Description : Which of the following events occurred first? (1) Albert Einstein propounded the General Theory of Relativity (2) Max Planck unveiled the Quantum Theory (3) Marconi first transmitted a wireless signal (4) Madame Marie Curie became the first woman Nobel Prize winner
Last Answer : (2) Max Planck unveiled the Quantum Theory Explanation: General Theory of Relativity: a theory of gravitation developed by Einstein in the years 1907-1915; Quantum Theory of Max Planck: 1900; ... transmission on December 11, 1901; and Madame Curie becoming the first woman Nobel Prize winner.
Description : Which of the following events occurred first ? (1) Albert Einstein propounded the General Theory of Relativity (2) Max Planck unveiled the Quantum Theory (3) Marconi first tranmitted a wireless signal (4) Madame Marie Curie became the first woman Nobel Prize winner
Last Answer : Max Planck unveiled the Quantum Theory
Description : Who received the Nobel Prize in Physics in 1922 for his theory which predicted the electron orbits of the Hydrogen atom?
Last Answer : ANSWER: (NIELS) BOHR
Description : Who received the Nobel Prize in Physics in 1923 for his experiment which measured the charge of the electron. The experiment consisted of allowing drops of oil which had become charged to fall in an electric field.
Last Answer : ANSWER: (ROBERT ANDREWS) MILLIKAN
Description : Electron was discovered by (1) Ernest Rutherford (2) Max Planck (3) Joseph Thomson (4) Albert Einstein
Last Answer : Joseph Thomson
Description : Name the German theoretical physicist who was awarded the Nobel prize for his principle of radiation which states that radiant energy is composed of tiny bits of energy called quanta, the magnitude of which can be calculated by multiplying the frequency of the radiation times a universal constant?
Last Answer : ANSWER: (MAX) PLANCK
Description : Can a photon be smaller than a Planck sphere?
Last Answer : The planck length is 1.616 X 10-35 meters long. Now . a photon is a conundrum because it seems to have mass, but acts like a wave (pure energy). From what I understand of the facts, photons take up even ... enough. I'll see if BBE can weigh in on this with how he understands it as a PhD of physics.
Description : Who is awarded by noble prize for the discovery is neutron?
Last Answer : Chadwick
Description : Who is awarded by noble prize for the discovery is neutron
Description : Harold Clayton Urey, an American, received the 193 Nobel Prize in chemistry for his discovery of: w) Francium x) Americium y) deuterium z) protium
Last Answer : ANSWER: Y -- DEUTERIUM
Description : The Royal Swedish Academy of Sciences, awarded the Noble Prize in: A. Physics B. Economics C. Chemistry D. (a) and (c)
Last Answer : D. (a) and (c)
Description : Albert Einstein received the Nobel prize in physics for his work on: w) gravitation x) relativity y) photoelectric effect z) Brownian motion
Last Answer : ANSWER: Y -- PHOTOELECTRIC EFFECT
Description : Who received the Nobel Prize in Physics in 1929 for his postulation of the wave nature of electrons?
Last Answer : ANSWER: (PRINCE LOUIS-VICTOR) De BROGLIE
Description : Who was Max Planck ?
Last Answer : Max Planck was a famous physicist.
Description : Want to know more about scientist Max Planck ?
Last Answer : : Carl Ernst Ludwig Marx Planck (born 23 April 1856 - died 4 October 1948). Was a German theoretical physicist. He was awarded the Nobel Prize in Physics in 1908.
Description : Max Planck is a citizen of which country ?
Last Answer : Max Planck is a German citizen.
Description : Which of the following occurred first? (1) Albert Einstein propounded the General Theory of Relativity (2) Max Planck unveiled the Quantum Theory (3) Guglielmo Marconi sent out the first wireless signals (4) Wright Brothers successfully flew an aircraft
Last Answer : (3) Guglielmo Marconi sent out the first wireless signals Explanation: Guglielmo Marconi sent out the first wireless signals. In the early summer of 1895 and despite an intervening hill, ... a gun. The theory of relativity transformed theoretical physics and astronomy during the 20th century.
Description : Which of the following occurred first ? (1) Albert Einstein propounded the General Theory of Relativity (2) Max Planck unveiled the Quantum Theory (3) Guglielmo Marconi sent out the first wireless signals (4) Wright Brothers successfully flew an aircraft
Last Answer : Guglielmo Marconi sent out the first wireless signals
Description : Name the female physicist who received the Nobel Prize in 1963 for her discovery concerning the shell structure of the nucleus.
Last Answer : ANSWER: (MARIA GOEPPERT) MAYER
Description : Xorn in Prague, Czechoslovakia, in 1896, this woman scientist received her MD from the German University in Prague. After moving to Washington University in the United States, she and her husband ... for their discovery of the course of the catalytic conversion." Name this esteemed woman scientist.
Last Answer : ANSWER: (GERTY) RADNITZ CORI
Description : Calculate the amount of energy set free by the annigilation of an electron and a positron. Given that mass of electron `= 0.00055` amu and positron =
Last Answer : Calculate the amount of energy set free by the annigilation of an electron and a positron. Given that ... 0.00055` amu and positron = 0.00055 amu.
Description : Find the minimum energy that a `gamma`-ray must have to give rise to an electron -positron pair. `{:("Mass of electron",= 0.00055 am u,),("Mass of pos
Last Answer : Find the minimum energy that a `gamma`-ray must have to give rise to an electron -positron pair. `{:("Mass ... ("Mass of positron",= 0.00055 am u,):}`
Description : Who first explained the billiard-ball-like collisions photons make with the free electrons in a scattering material? He received the Nobel Prize in Physics in 1927 for this work.
Last Answer : ANSWER: ARTHUR HOLLY COMPTON
Description : Who won the Nobel Prize in Literature in 1918 ?
Last Answer : : Karl Ghelrup and Henrik Pontoppidan of Denmark were awarded the Nobel Prize in Literature in 1918.
Last Answer : : Vernon von Heidenstein of Sweden was awarded the Nobel Prize in Literature in 1918.
Description : Dr. Leon Lederman and two other physicists won the Nobel prize for discovering an elementary particle. That particle is the: w) positron x) meson y) muon z) neutrino
Last Answer : ANSWER: Z -- NEUTRINO
Description : If an electron and a photon have the same wavelength, then they will have the same – (1) velocity (2) linear momentum (3) angular momentum (4) energy
Last Answer : (2) linear momentum Explanation: When a non-relativistic electron and a non-relativistic proton are moving and have the same de Broglie wavelength, then they will have the same linear mo-mentum p = mv.
Description : In changing from an energy state of -1.51 electron-volts to -3.40 electron-volts, an atom emits a photon whose energy is: w) 1.51 electron-volts x) 1.89 electron-volts y) 3.40 electron-volts z) 4.91 electron-volts
Last Answer : ANSWER: X -- 1.89 ELECTRON-VOLTS
Description : An x-ray photon collides with a free electron, and the photon is scattered. During this collision there is conservation of: w) momentum but not energy x) neither momentum nor energy y) energy but not momentum z) both momentum and energy
Last Answer : ANSWER: Z -- BOTH MOMENTUM AND ENERGY
Description : If an electron and a photon have the same wavelength, then they will have the same (1) velocity (2) linear momentum (3) angular momentum (4) energy
Last Answer : linear momentum
Description : Decrease in atomic number is observed during a)`alpha`-emission b)`beta`-emission c)positron emission d)electron capture
Last Answer : Decrease in atomic number is observed during a)`alpha`-emission b)`beta`-emission c)positron emission ... `-emission C. positron emission D. K-capture
Description : The particle required to continue the chain process of Uranium fission is – (1) Electron (2) Proton (3) Neutron (4) Positron
Last Answer : (3) Neutron Explanation: Fission as encountered in the modern world is usually a deliberately produced man-made nuclear reaction induced by a neutron. The nuclear fuels undergo fission when struck by fission ... rate in a nuclear reactor or at a very rapid uncontrolled rate in a nuclear weapon.
Description : The antiparticle of an electron is – (1) Positron (2) Proton (3) Alpha particles (4) Beta particles
Last Answer : (1) Positron Explanation: Corresponding to most kings of particles, there is an associated antiparticle with the same mass and opposite charge (including electric charge). The antiparticle of the ... radioactive decay. The opposite is also true: the antiparticle of the positron is the electron.
Description : Which of the following is not a nucleon? (1) Proton (2) Neutron (3) Electron (4) Positron
Last Answer : (4) Positron Explanation: Nucleon is one of the particles that makes up the atomic nucleus. Each atomic nucleus consists of one or more nucleons, and each atom in turn consists of a cluster of ... nucleon number may be used in place of the more common terms mass number or atomic mass number.
Description : The fundamental particles present in the nucleus of an atom are - (1) Electron, proton (2) Proton, neutron (3) Neutron, electron (4) Neutron, positron
Last Answer : (2) Proton, neutron Explanation: The nucleus is the very dense region consisting of protons and neutrons at the center of an atom. It was discovered in 1911, as a result of Ernest Rutherford's ... mass of an atom is located in the nucleus, with a very small contribution from the orbiting electrons.
Description : Name the particle that is most essential to continue the chain reaction during the fission of uranium - (1) Electron (2) Proton (3) Neutron (4) Positron
Last Answer : (3) Neutron Explanation: Nuclear fission is either a nuclear reaction or a radioactive decay process in which the nucleus of an atom splits into smaller parts (lighter nuclei), often producing ... in the modern world is usually a deliberately produced manmade nuclear reaction induced by a neutron.
Description : Pick out the correct statement. (A) Positron is the antiparticle of electron (B) In α-decay, the ratio of neutron to proton decreases (C) Ionising power of β-rays is higher than that of α-rays (D) Speed of α-rays is more than that of γ-ray
Last Answer : (A) Positron is the antiparticle of electron
Description : Positron is a/an (A) Nucleus having two protons (B) Helium nucleus (C) Electron with positive charge (D) Nucleus with one proton and one neutron
Last Answer : (C) Electron with positive charge
Description : Pick out the wrong statement. (A) The nucleus of a hydrogen atom is identical with a proton (B) A, β-ray particle is identical with an electron (C) Mass of an electron is about 1/1800th of the lightest nucleus (D) Positron is heavier than a proton
Last Answer : (D) Positron is heavier than a proton
Description : Mass of a positron is same as that of a/an (A) Electron (B) α-particle (C) Proton (D) Neutron
Last Answer : (A) Electron
Description : The decrease in the atomic number is not observed in case of (A) Electron capture (B) β-emission (C) α-emission (D) Positron emission
Last Answer : (B) β-emission
Description : The anti-particle to an electron is: w) proton x) positron y) neutron z) anti-proton
Last Answer : ANSWER: X -- POSITRON
Description : When an atomic nucleus emits a beta particle, one of its neutrons disintegrates into one of the following set of particles. Does it disintegrate into: w) a positron and an electron x) a proton, an ... and an antineutrino y) a proton, an electron, and a positron z) a neutrino and an antineutrino
Last Answer : ANSWER: X -- A PROTON, AN ELECTRON AND AN ANTINEUTRINO