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InterviewSolution
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In the question number 59, the value of velocity of the revolving electron isA. `1.2xx10^6ms^(-1)`B. `2.2xx10^6ms^(-1)`C. `3.2xx10^6ms^(-1)`D. `4.2xx10^6ms^(-1)` |
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Answer» Correct Answer - B As `v=(e)/(sqrt(4piepsilon_0mr))` Here, `e=1.6xx10^(-19)C,m=9.1xx10^(-31)kg,r=5.3xx10^(-11)m` and `4piepsilon_0=(1)/(9xx10^(9))N^(-1)m^(-2)C^(2)` `therefore v=(1.6xx10^(-19))/sqrt((1)/(9xx10^(9))xx9.1xx10^(-31)xx5.3xx10^(-11))` `=2.2xx10^6ms^(-1)`. |
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