When electric transition occurs from higher energy state to lower energy state with energy difference equal to `Delta E` electron volts , the wavelkength of the line emitted is apporomately equal to

Options

A. `(12395)/(Delta E ) xx 10^(-10)m`
B. `(12395)/(Delta E ) xx 10^(10)m`
C. `(12395)/(Delta E ) xx 10^(-10)m`
D. `(12395)/(Delta E ) xx 10^(10)m`

Answer

A

Explanation

`lambda = (hc)/(Delta E) = (6.62 xx 10^(-34) J s xx 3 xx 10^(8) m s^(-1))/(E xx 1.602 xx 10^(-19) J)`
`= 12395 xx 10^(-10)m`