Atoms And Nuclei Question 88
Question: In a hydrogen atom, the distance between the electron and proton is $ 2.5\times {{10}^{-11}},m $ . The electrical force of attraction between them will be [Pb. PMT 2000]
Options:
A) $ 2.8\times {{10}^{-7}},N $
B) $ 3.7\times {{10}^{-7}}N $
C) $ 6.2\times {{10}^{-7}}N $
D) $ 9.1\times {{10}^{-7}}N $
Show Answer
Answer:
Correct Answer: B
Solution:
$ F=\frac{9\times 10^{9}\times 1.6\times {{10}^{-19}}\times 1.6\times {{10}^{-19}}}{{{(2.5\times {{10}^{-11}})}^{2}}}=3.7\times {{10}^{-7}}N $
