A) \[2.09\text{ }Js\]
B) \[1.05\times {{10}^{-34}}Js\]
C) \[3.32\times {{10}^{-34}}Js\]
D) \[4.16\times {{10}^{-34}}Js\]
Correct Answer: B
Solution :
Here: Number of initial orbit \[{{n}_{1}}=4\] Number of final orbit \[{{n}_{2}}=5\] Now change in angular momentum is given by \[\Delta L={{L}_{2}}-{{L}_{1}}=\frac{{{n}_{2}}h}{2\pi }-\frac{{{n}_{1}}h}{2\pi }\] \[=\frac{h}{2\pi }\left( {{n}_{2}}-{{n}_{1}} \right)\] \[=\frac{6.6\times {{10}^{-34}}}{2\times 3.14}(5-4)=1.05\times {{10}^{-34}}Js\]
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