Q.

How fast does light travel in vacuum as compared to the velocity of an electron in Bohr's first orbit of hydrogen atom?

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a

137 times

b

97 times

c

13.7 times

d

67 times

answer is C.

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Detailed Solution

Vn=V0×ZnVn=2.18×106 Z=1n=1
Velocity of light = 3 x 108 ms-1
3×1082.18×106=300218=137 times

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How fast does light travel in vacuum as compared to the velocity of an electron in Bohr's first orbit of hydrogen atom?