PhysicsAtomic Spectra Quiz August 3, 2022August 3, 2022 - by mdcatpk 1 Created on August 03, 2022 By mdcatpk Atomic Spectra Quiz 1 / 20 Ratio of the weight of H-atom to that of an electron is approximately 1836 18.336 18360 2 / 20 Photon of highest frequency will be absorbed when transition takes place from 1st to 5th orbit 2nd to 5th orbit 3rd to 5th orbit 3 / 20 In hydrogen spectrum which one of the following series lies in the ultraviolet region Balmer series Lymann series Pfund series 4 / 20 In obtaining an X-ray photograph of our hand we use the principle of Shadow photograph Photo electric effect Ionization 5 / 20 Excited atoms return to their ground state in 10-6s 10-8s 10-10s 6 / 20 When we excite some atoms by heat collision or electrical discharge they will Radiate electromagnetic energy of discrete characteristic wavelength Absorb particular wavelengths when white light is incident on them Emit either invisible or visible light 7 / 20 Hydrogen atom does not emit X-rays because Its energy levels are too far apart It is too small in size It has a single electron 8 / 20 Which one of following postulate is in accordance with the Rutherfords model Discrete spectra for atoms Continuous spectra for atoms Either continuous nor discrete 9 / 20 X-ray are Of unknown nature High energy electrons High energy photons 10 / 20 Tick the correct statement There are as many excitation potentials as there are excited states An atom has limited number of ionization potentials but a large number of excitation potentials All of above 11 / 20 Ground state energy of the 4th orbit in a H-atom is 0.85 eV 13.60 eV 3.40 eV 12 / 20 Total number of series in hydrogen spectrum is 3 5 4 13 / 20 The radiations emitted form hydrogen filled discharge tube show Band spectrum Line spectrum Continuous spectrum 14 / 20 The electric P.E of an electron in an orbit at a distance rn from the positive charge Ke2/rn Ke2/rn2 ÀKe2/rn 15 / 20 Radiation with wavelength longer than red lights Infra red radiation X-rays Visible radiation 16 / 20 Bracket series is obtained when all transition of electron terminate on 4th orbit 5th orbit 3rd orbit 17 / 20 In an electronic transition atom cannot emit γ-rays Infra red radiation Visible light 18 / 20 Reverse process of photoelectric effect is Pair production Compton effect X-rays production 19 / 20 X-rays are similar in nature to Cathode rays Positive rays γ-rays 20 / 20 The penetrating power of X-rays depends on their Frequency Applied voltage Source Your score is The average score is 80% LinkedIn Facebook Twitter VKontakte 0% Restart quiz Atomic Spectra Quiz Check out for more quizzes for mdcat 2022 preperation. Start studying now!
