In two H-atoms their electrons are moving in1st state and in 1st excited state respectively, ratio of timeperiods will be1.1 : 82.1 : 43.1 : 24.2 : 1

time period =T=2pir/v                       ( r is radius of orbit,v is velocity of elctron)

v is inversly proportional to n

r is directly proportional to n²

 so time period (T) is directly proportionla to n³ ....

  for  1 state n =1  , for first exited state n=2

    T1/T2= (n1/n2)³

      T1/T2= 1/8     

first option is correct

Approved