Question

Statement : wavelength of (I) line of Humphry series is more than (I) line of Lyman series in H-atom
Explanation : `Delta E = (hc)/( lambda)`.
A. If both assertion and reason are true and the reason is the correct explanation of the assertion.
B. If both assertion and reason are true but reason is not the correct explanation of the assertion.
C. If assertion is true but reason is false
D. If assertion is false but reason is true.

Answer 1

Correct Answer - A
(a) `Delta E_1 = E_6 - E_5` in Humphrey series and `Delta E = E_2 - E_1` for Lyman series
`because Delta E gt Delta E_1`
`lamda_(Lyman) lt lamda_(Humphry)`.