NEET Physics Bohr Model MCQ Question
Calculate the kinetic energy of an electron moving in the first Bohr orbit of the hydrogen atom using the given velocity 2.2 × 10^6 m/s. Assume the mass of the electron is 9.1 × 10^-31 kg.
2 × 10^-18 J
1 × 10^-18 J
4 × 10^-18 J
5.5 × 10^-18 J
Correct Answer
Detailed Explanation
The kinetic energy K.E. is given by (1/2)mv^2. Substituting m = 9.1 × 10^-31 kg and v = 2.2 × 10^6 m/s gives K.E. = 1.1 × 10^-18 J.
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