What does it mean if the $\alpha -$ particle passes through the foil of gold ?
What does it mean if the $\alpha -$ particle passes through the foil of gold ?
Similar Questions
An $\alpha$- particle of $5\ MeV$ energy strikes with a nucleus of uranium at stationary at an scattering angle of $180^o$. The nearest distance upto which $\alpha$- particle reaches the nucleus will be of the order of
An $\alpha$- particle of $5\ MeV$ energy strikes with a nucleus of uranium at stationary at an scattering angle of $180^o$. The nearest distance upto which $\alpha$- particle reaches the nucleus will be of the order of
- [IIT 1981]
The radius of the smallest electron orbit in hydrogen-like ion is $(0.51/4 \times 10^{-10})$ metre; then it is
The radius of the smallest electron orbit in hydrogen-like ion is $(0.51/4 \times 10^{-10})$ metre; then it is
When the accelerating voltage applied on the electrons increased beyond a critical value
When the accelerating voltage applied on the electrons increased beyond a critical value
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
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 |
- [JEE MAIN 2014]
Ratio of longest wavelengths corresponding to Lyman and Balmer series in hydrogen spectrum is
Ratio of longest wavelengths corresponding to Lyman and Balmer series in hydrogen spectrum is