The time taken by an electron moving with a speed of 2.18 × 106 m/s to complete one revolution in the first orbit (radius 0.53 A) of hydrogen atom is
A. 1.527 × 10-15 s
B. 1.527 × 10-16 s
C. 1.527 × 10-17 s
D. 1.527 × 10-18 s.
Answer:B
The time taken by an electron moving with a speed of 2.18 × 106 m/s to complete one revolution in the first orbit (radius 0.53 A) of hydrogen atom is
A. 1.527 × 10-15 s B. 1.527 × 10-16 s C. 1.527 × 10-17 s D. 1.527 × 10-18 s.