Question

............please solve these​

Answer 1

Step-by-step explanation:

n¥ = 2πr

where r is radius of orbit

so r = 0.53 n²/z

n is orbit ( here n =2)

and ¥ is lemda i.e wavelength

substitiing all the values

u ll get the value of r  

and circumference is equal 2πr

Answer 2

n¥ = 2πr

where r is radius of orbit

so r = 0.53 n²/z

n is orbit ( here n =2)

and ¥ is lemda i.e wavelength

substitiing all the values

u ll get the value of r  

and circumference is equal 2πr