Physics Atomic Spectra Test Online Preparation Mcqs Physics Atomic Spectra Test Online Preparation Mcqs With Answers Start Below 123456789101112131415Show paginator Hide paginator 7% Question 1 of 15 1. If electron and proton have the same wavelength then they have sameA. MomentumB. All of aboveC. EnergyD. VelocityQuestion 1 of 15 Loading... Question 2 of 15 2. Band spectrum is produced by:A. HeB. HC. H2D. NaQuestion 2 of 15 Loading... Question 3 of 15 3. Bracket series is obtained when all transitions of electron terminate on _______.A. 5th orbitB. 2nd orbitC. 4th orbitD. 3rd orbitQuestion 3 of 15 Loading... Question 4 of 15 4. X-rays are similar in nature to _______.A. α-raysB. γ-raysC. Cathode raysD. Positive raysQuestion 4 of 15 Loading... Question 5 of 15 5. Electron cannot exist in the nucleus; it is confirmed by observing that _____.A. It does emit γ-radiationB. Its size as compare to proton and neutron is very smallC. No antiparticle of electron is presentD. The velocity of electron must be very high according to uncertainty principleQuestion 5 of 15 Loading... Question 6 of 15 6. The radiations emitted from hydrogen filled discharged tube showA. Line spectrumB. Absorption spectrumC. Continuous spectrumD. Band spectrumQuestion 6 of 15 Loading... Question 7 of 15 7. If the charge on electron and proton become double then Rydberg constant will beA. 8RB. 2RC. R/8D. R/2Question 7 of 15 Loading... Question 8 of 15 8. Total number of series in hydrogen spectrum isA. SixB. FiveC. FourD. ThreeQuestion 8 of 15 Loading... Question 9 of 15 9. The minimum wavelength of X-rays can further be reduced byA. Using a target element of higher atomic numberB. Reducing the pressure or cooling the targetC. Increasing the temperature of the filamentD. Increasing the potential difference between the cathode and the targetQuestion 9 of 15 Loading... Question 10 of 15 10. X-rays are _________A. of unknown natureB. high energy electronsC. high energy photonsD. radio isotopesQuestion 10 of 15 Loading... Question 11 of 15 11. Which one of the following postulate is in accordance with the Rutherford’s model?A. No spectrumB. Continuous spectra for atomsC. Either continuous nor discreteD. Discrete spectra for atomsQuestion 11 of 15 Loading... Question 12 of 15 12. In normal state of energy, the incident high energy photons will beA. Cause laser productionB. StimulatedC. AbsorbedD. Cause X-ray emissionQuestion 12 of 15 Loading... Question 13 of 15 13. In an electronic transition, atom cannot emit _____A. Ultra violet raysB. γ-raysC. Infra red radiationsD. Visible lightQuestion 13 of 15 Loading... Question 14 of 15 14. The penetrating power of x-rays is comparable with that ofA. α-raysB. All of aboveC. β-raysD. γ-raysQuestion 14 of 15 Loading... Question 15 of 15 15. Ground state energy of the 4th orbit in a H-atom is ______.A. -0.85 eVB. -1.51 eVC. -13.60 eVD. -3.4 eVQuestion 15 of 15 Loading... Loading... Related Study Posts:MDCAT Test Physics Test Online PreparationAtomic Energy Jobs Test NTS Result 2025 Check OnlineASF Written Test Preparation Online McqsFPSC SST Test Preparation Mcqs OnlineOnline ECAT Test Preparation McqsPPSC Lecturer Test Preparation Online McqsLecturer Test KPPSC Preparation Mcqs OnlineSPSC SST Test Preparation Mcqs Online with SyllabusFPSC Test Preparation Mcqs Online Subject WiseIB Pakistan NTS Jobs 2025 Online Test Preparation Mcqs