Match List $- I$ (Experiment performed) with List $-II$ (Phenomena discovered/associated) and select the correct option from the options given the lists
List $- I$ | List $- II$ |
$(1)$ Davisson and Genner | $(i)$ Wave nature of electrons |
$(2)$ Millikan's oil drop experiment | $(ii)$ Charge of an electron |
$(3)$ Rutherford experiment | $(iii)$ Quantisation of energy levels |
$(4)$ Franck-Hertz experiment | $(iv)$ Existence of nucleus |
$(1 )-(i), (2)-(ii), (3)-(iii), (4)-(iv)$
$(1 )-(i), (2)-(ii), (3)-(iv), ( 4)-(iii)$
$(1)-(iii), (2)-(iv), (3)-(i), (4)-(ii)$
$(1 )-(iv), (2-(iii), (3)-(ii), (4 )-(i)$
The transition from the state $n = 4$ to $n = 3$ in a hydrogen-like atom results in ultraviolet radiation. Infrared radiation will be obtained in the transition
The ratio of the speed of the electrons in the ground state of hydrogen to the speed of light in vacuum is
What radioactive source did the Geiger and Marsden use in the scattering experiment?
The diagram shows the path of four $\alpha - $ particles of the same energy being scattered by the nucleus of an atom simultaneously. Which of these are/is not physically possible
Ratio of longest wave lengths corresponding to Lyman and Balmer series in hydrogen spectrum is