# Q6 Atomic structure

time taken to complete a single revolution

T = path distance / velocity

or

T = 2πr/v (1)

here we assume that the linear velocity remains constant i every orbit.

so,

T1 = 2πr1/v (2)

where r1 = R

and

T2 = 2πr2/v (3)

where

r2 = 4R

thus, the ratio of time taken will be

T1/T2 = (2πr1/v) / 2πr2/v

or

T1/T2 = 2πR/2π(4R) = 2πR/8πR

thus.

**T1/T2 = 1/8**

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