Assertion: In a hydrogen atom energy of emitted photon corresponding to transition from `n = 2` to `n = 1` is much greater as compared to transition from `n=oo` to `n = 2`.
Reason: Wavelength of photon is directly proportional to the energy of emitted photon.

Options

A. If both assertion and reason are true and reason is the correct explanation of assertion.
B. If both assertion and reason are true but reason is not the correct explanation of assertion.
C. If assertion is true but reason is false.
D. If assertion is false but reason is true.

Answer

C

Explanation

`E_(n_(1) rarr n_(2)) =- 13.6 [(1)/(n_(2)^(2)) - (1)/(n_(1)^(2))], n_(1) = 2` and `n_(2) = 1`
`E_(II) rarr E_(I) =- 13.6 xx (3)/(4) =- 10.2 eV`
`E_(oo) rarr E_(2) =- 13.6[(1)/(2^(2)) - (1)/(oo^(2))] =- 3.4eV`
Hence assertion is ture
And we know `DeltaE = (he)/(lambda)` or `DeltaE prop (1)/(lambda)`
Hence reason is false