PhysicsEasy183×since 2002Q6017Speed of an electron in Bohr's 7th 7^{\text {th }}7th orbit for Hydrogen atom is 3.6×106 m/s3.6 \times 10^{6} \mathrm{~m} / \mathrm{s}3.6×106 m/s. The corresponding speed of the electron in 3rd 3^{\text {rd }}3rd orbit, in m/s\mathrm{m} / \mathrm{s}m/s is :A(1.8×106)\left(1.8 \times 10^{6}\right)(1.8×106)B(7.5×106)\left(7.5 \times 10^{6}\right)(7.5×106)C(8.4×106)\left(8.4 \times 10^{6}\right)(8.4×106)D(3.6×106)\left(3.6 \times 10^{6}\right)(3.6×106)Check answerSkip