In the hydrogen atom, an electron makes a transition from n=2 to n=1. The magnetic field produced by the circulating electron at the nucleus

Options

A. Decreases 16 times
B. Increases 4 times
C. Decreases 4 times
D. Increases 32 times

Answer

D

Explanation

`B = (mu_0i)/(2pi)`
or `B prop (i)/(r )`
See the hint of Q.No 4 of same section.
`iprop (1)/(n^3) and r prop n^2`
`:. B =(1)/(n^5)`
`:. (B_1)/(B_2) = ((n_2)/(n_1))^5 = ((2))^5 = 32`