Teaching UP B.Ed (Paper 1 & 2) Mock Test 2025 Physics Dual Nature: Photon and Matter Waves The Hydrogen Atom
An electron projected perpendicular to a uniform magnetic field B moves in a circle. If Bohr's quantization is applicable, then the radius of the electronic orbit in the first excited state is :
1
\(\sqrt{\frac{2 h}{\pi e B}}\)
2
\(\sqrt{\frac{4 \mathrm{~h}}{\pi \mathrm{eB}}}\)
3
\(\sqrt{\frac{\mathrm{h}}{2 \pi \mathrm{eB}}}\)
4
\(\sqrt{\frac{\mathrm{h}}{\pi \mathrm{eB}}}\)