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Q.

In the Hydrogen atom, the electron is making 

6.6 \times {10^{15}}\,r.p.s.

  If the radius of the orbit is 

0.53 \times {10^{ - 10}}\,metre,

  then magnetic field produced at the centre of the orbit is

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a

140 Tesla

b

12.5 Tesla

c

1.4 Tesla

d

0.14 Tesla

answer is B.

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Detailed Solution

i = q\nu
B = \frac{{{\mu _0}i}}{{2r}} = \frac{{{\mu _0}q\nu }}{{2r}} = \frac{{4\pi \times {{10}^{ - 7}} \times 1.6 \times {{10}^{ - 19}} \times 6.6 \times {{10}^{15}}}}{{2 \times 0.53 \times {{10}^{ - 10}}}}


 

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