Physics question and answers for October 17, 2023
- Q A normal stationary lithium atom releases an alpha particle with velocity 21 31 7k km s What will be the velocity of the daughter element just after the release of...
- Q The emitted 13 particle by a radioactive atom is an electron which is D Emitted from the orbit of the atom Already present in the nucleus O Produced by the...
- Q Consider two nuclei of the same radioactive nuclide One of the nuclei was created in a supernova explosion 5 billion years ago The other was created in a nuclear reactor...
- Q 10 10 3 A 175 4 225 A 12 In the given nuclear reaction A B C D E represents 920238 Th Pa E 234 1 A 234 B 90...
- Q Two nuclei have their mass numbers in the ratio of 1 3 the ratio of their nuclear densities would be Question Type Single Correct Type 1 2 3 31 3...
- Q Q 12 A nucleus with mass number 184 initially at rest emits an a particle If the Q value of th reaction is 5 5 MeV calculate the kinetic energy...
- Q Three physical quantities are listed in list I and their values are listed in list II in random order List l List II P Binding energy of heavy nuclei per...
- Q 244s He is told that the air in the tube has been replaced by another gas assume that the column remair filled with the gas If the minimum height at...
- Q The radioactive sources A and B of half of 2hr and 4hr respectively initially conta same number of radioactive atoms At th of 2 hours their rates of disintegration the...
- Q 50 A radioactive nucleus X undergoes a decay to form Y Y undergoes an a decay to form Z Under this transformation A The mass number of Z is higher...
- Q 100 At time 0 a container has N radioactive atoms with a decay constant 2 In addition e numbers of atoms of the same type are being added to the...
- Q A small quantity of containing Na24 radio nuclide half life 15 hour of activity 1 0 micro curie is injected into the blood of a person A sample of the...
- Q A nucleus with mass number 240 breaks into two fragments each of mass number 120 the binding energy per nucleon of unfragmented nuclei is 7 6 MeV while that of...
- Q A nucleus with masa number 240 breaks into two fragmenta each of mass number 120 the binding energy per nucleon of unfragmented nuclei is 7 6 MeV while that of...
- Q The primary source of the sun s energy is a series of thermonuclear reactions in which the energy produced is c times the mass difference between A two hydrogen atoms...
- Q 34 the nucleus 235 92Y initially at rest decays into 231 90 X by emitting an a particle 235 231 4 92 90 2 Y X He energy The binding...
- Q The mass number of a nucleus is A always less than its atomic number always more than its atomic number C equal to its atomic number D Sometimes more than...
- Q At a given instant sat t 0 two radioactive substances A and B have equal activities The ratio RB RA of their activities after time t itself decays with time...
- Q the wrong statement A The nuclear force becomes weak if the nucleus contains too many protons compared to the numbe of neutrons The nuclear force becomes weak if the nucleus...
- Q A nucleus with A 240 has a binding energy of 7 5 MeV per nucleon When it splits into two fragments of equal mass 240 MeV of energy is released...
- Q 2 3 A certain element decays in two different ways it shows alpha decay with a half life of In 2 years and with beta decay it has a half...
- Q a Two large conducting spheres carrying charges 9 and 9 are brought close to each other Is the magnitude of electrostatic force between them exactly given by 9 9 4...
- Q A neutron is 0 0014 u heavier than a proton An isotope of Nitrogen 5N has a mass of 15 00011 u while its mirror nucleus 150 has a mass...
- Q d 1 5 A radioactive nucleus of mass M emits a photon of frequency n and the nucleus recoils The recoil energy will be 2011 Pre a Mc 2 hv...
- Q 26 A certain mass of Hydrogen is changed to He lium by the process of fusion The mass defect in fusion reaction is 0 02866 a m u The energy...
- Q 3 The half life period for catalytic decomposition of AB at 50 mm is found to be 4 hrs and at 100 mm it is 2 hrs The order of...
- Q larks TE KE Attempt All 35 questions Which of the following is incorrect related to energy of a satellite KE PE 2 B E IT E I None of these...
- Q A given sample has two radioactive nuclei C and D The half life of species D is 1 68 days whereas that one of C is unknown Initially they are...
- Q 50 180 The binding energies of nuclei A and B are K and K respectively Four nuclei of A fuse to give one nuclei of B and energy released is...
- Q c William Crookes d J J Thomson 3 The specific charge of a proton is 9 6 x 10 C kg The specific charge of an alpha particle will be...
- Q A beam of pions 7 is incident on a proton target giving rise to the process n A Assuming that the decay proceeds through strong interactions the total isospin I...
- Q How much mass of uranium to be destroyed per 30 600 alla fy minute to operate a nuclear reactor of 600 MW a fel ca 1 400 g 2 400...
- Q and n particles Here n is A B 7 3 4 6 Unans
- Q 34 180 When two nuclei with A 4 joined to form a heavier nucleus t binding energy per nucleon of heavier nuclei is More than the BE per nucleon of...
- Q 28 180 Mark for Review During a 3 minus decay O An atomic electron is ejected 02 56 hr mir A neutron in the nucleus decays emitting ar electron A...
- Q Fission of nuclei is possible because the binding energy per nucleon in them Increases with mass number at high mass numbers Decreases with mass number at high mass numbers Increases...
- Q An atomic electron is ejected A neutron in the nucleus decays emitting an electron A part of binding energy is converted into electror An electron which is already present in...
- Q When two nuclei with A 4 joined to form a heavier nucleus the binding energy per nucleon of heavier nuclei is More than the BE per nucleon of lighter nuclei...
- Q the ratio of energies of photons produced due to transition of an electron of hydrogen atom from its i second permitted energy level to the first permitted level and ii...
- Q O Only A Consider the following two statements Statement A The average kinetic energy per degree of freedom per molecule at a given temperature increases as degrees of freedom increase...
- Q An a particle with a kinetic energy of 2 1 eV makes a head on collision with a hydrogen atom moving towards it with a kinetic energy of 8 4...
- Q 3 Answer the following questions which help you to understand the difference between Thomson s model and Rutherford s model better a Is the average angle of deflection of a...
- Q meson hydrogen atom in a bound state of negatively charged pion mass of pion 27 times mass of electrons and a proton If the number of revolutions a meson makes...
- Q 2 It is necessary to apply quantum statistics to a system of particles if a there is substantial overlap between the wave functions of the particles b the mean free...
- Q A vessel of 831cc contains H at 0 6 atm and 27 C If half life of H is 12 3 years then the activity of the gas is Question...
- Q 12 A heavy nucleus X of mass number 240 and binding energy per nucleon 7 6 MeV is spil two fragments Y and Z of mass numbers 110 and 130...
- Q FISS Fission of nucle is possible because the binding energy per nucleon in them D AIPMT Prelims 2005 1 Increases with mass number at high mass numbers 2 Decreases with...
- Q Five equal resistances each of resistance R are connected as shown in the figure A battery of V volts is connected between A and B The current flowing in AFCEB...
- Q 40 At time t 0 some radioactive gas is injected into a sealed vessel At time T some more mass of the same gas is injected into the same vessel...
- Q A particular smoke detector contains 1 45 Ci of 241 Am with a half life of 458 years The isotope is encased in a thin aluminum container Calculate the mass...
- Q The wavelength of the first line of Lyman series for hydrogen atom is equal to that of the second line of Balmer series for a hydrogen like ion The atomic...
- Q View In English The count rate for 10 gm of radioactive material was measured at different times and this has been shown in the graph with scale given The half...
- Q Consider a nuclear reaction A B C A nucleus A moving with kinetic energy of 5 MeV collides with a nucleus B moving with kinetic energy of 3 MeV and...
- Q 6 A uranium 238 nucleus initially at rest emits an alph particle with a speed of 14 x 10 m s Calculate the recoil speed of the residual nucleus thorium...
- Q 3 Polonium emits an a particle a Calculate the maximum height of the barrier for the a particle within the nucleus b Using P exp 4 0ZDQ 9 3x107 ZDR...
- Q Let Fpp Fpn and Fan denote the nuclear force between proton proton proton neutron and neutron neutron pair respectively When separation is 1 fm Fpp Fpn Fnn O Fpp Fpn...
- Q A potential difference of 20 kV is applied across an X ray tube Find the minimum wavelength of X rays generated A skipped C 0 62 A 0 65 A...
- Q the After two alpha decays and four beta ve decays the atomic number 1 Decreases by 4 and mass number remains same 2 Remains the same but the mass number...
- Q 2 5 Half life of radioactive substance is 3 20 h What is the time taken for a 75 of substance to be used 6 38 h O 12 h...
- Q The rest mass of an electron as well as that of positron is 0 51 MeV When an electron and positron are annihilate they produce gamma rays of wavelength s...
- Q Two samples X and Y contain equal amount of 1 radioactive substances If 16th of the sample 1 X and 256 of the sample Y remain after 8 hours then...
- Q binding energy per nucleon in them Question Type Single Correct Type 1 2 3 4 Increases with mass number at high mass numbers Decreases with mass number at high mass...
- Q Q No 4 View In English Energy released in the fission of a single g2u235 nucleus is 200 MeV The fission rate of a g2u235 fuelled reactor operating at a...
- Q 15 The critical volume of a gas is 0 072 lit mol The radius of the molecule will be in cm 1 10 23 X 2 10 2 10 3...
- Q Callium arsenide phosphide is a semiconducting material having energy band gap of 2 eV if the band gap is incresed to 3 eV the wavelength will be OPTIONS 5123 Angstrom
- Q Suppose an alpha particle accelerated by a potential of V volt is allowed to collide with a nucleus whose atomic number is Z then the distance of closest approach of...
- Q A positron with kinetic energy 1 MeV and an electron with kinetic energy 1MeV meet each ot moving in opposite directions They annihilate each other by emitting two photons If...
- Q 5 5 An isolated hydrogen atom emits a photon of 10 2 eV recoil speed of hydrogen atom A 3 25 m s B 3 m s D 1 m...
- Q 1 Show that the mass defect of the nuclear reaction 1BeB e is given as 4 ush oda Serai do atomic mass of B Be whereas for the B Be...
- Q 0 A rigid tank contains 35 kg of nitrogen at 6 atm Sufficient quantity of oxygen is supplied to increase the pressure to 9 atm while the temperature remains constant...
- Q A radioactive nucleus ZXA emit 3a particles and 53 particles The ratio of number of neutrons to that of protons in the product nucleus will be Question Type Single Correct...
- Q 200 MeV of energy can be obtained by per fission in reactor generating 1000 kW Find the number of nuclei undergoing the fission per second Question Type Single Correct Type...
- Q Half life period of two elements are 30 minute and 20 minute respectively then after one hour ratio of the remaining nuclei will be Initially both have equal active nuclei...
- Q The wavelength of a photon is 4 times of an electron The speed of the electron is V C then 100 ratio of energy of electron to that of photon...
- Q 7 In Rutherford scattering experiment what will be the correct angle for a scattering for an impact parameter b 0 CBSE PMT 1994 JIPMER 2000 Gujarat CET 2007 a 90...
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