Flag Modern Physics> Pls2...
question mark

An electron spends about 10^-8s in an excited state before it drops to a lower state by emiting a photon. How many revolution does an electron in an n=2 bohr orbit make in 1.00*10^-8s? (ans_8.23*10^6 revolution)

rajan jha , 14 Years ago
Grade 12
anser 1 Answers
vikas askiitian expert

Last Activity: 14 Years ago

velocity in any orbit = (2.18*106)/n m/s

 V2 = (2.18*106)/2 m/s

radius of any orbit =  (52.9)*10-12n2 m

r2 = (52.9*10-12)4 m

time in which electron completes one revolution is

T = 2pir2/V2

T =12*10-16                    

let it completes n crevolution so total time taken = n(12*10-16)

 n(12*10-16) = 10-8

    n = 8.23 * 106 revolutions

Provide a better Answer & Earn Cool Goodies

Enter text here...
star
LIVE ONLINE CLASSES

Prepraring for the competition made easy just by live online class.

tv

Full Live Access

material

Study Material

removal

Live Doubts Solving

assignment

Daily Class Assignments


Ask a Doubt

Get your questions answered by the expert for free

Enter text here...