Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Atoms

Question:

Using Bohr’s Model, find the quantum number associated with earth’s revolution around the sun in an orbit of radius 5 ×1011m, orbital speed of 3×104m/s, and mass of earth = 6×1024kg.

Options:

2.57 X 1070

2.57 X 1074

2.57 X 1076

2.57 X 1078

Correct Answer:

2.57 X 1074

Explanation:

mvnrn = nh/(2π)