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Using Bohr's model, calculate the ratio of the magnetic fields generated due to the motion of the electrons in the 2^nd and 4^th orbits of hydrogen atom ______.

Asked in JEE Main 2nd April 2nd Shift 2026 · Postulates, radius, speed and angular momentum

Answer: 32

Step-by-step solution

B=(μ₀I)/(2r) with I=(ev)/(2π r): B∝v/(r²)∝(1/n)/(n⁴)=n⁻⁵.

(B₂)/(B₄)=(4/2)⁵=32

→ 32

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