A free hydrogen atom after absorbing a photon of wavelength 2 gets excited from the state n = 1 to the state n = 4. Immediately after that the electron jumps to n = m state by emitting a photon of wavelength 2. Let the change in momentum of atom due to the absorption and the emission are Ap, and Ape. respectively. 1 which of the option(s) is/are correct? 5 If = No [Use hc = 1242 eV nm; 1 nm = 10m, h and c are Planck's constant and speed of light, respectively] . 1 A. = Ap. 2 B. The ratio of kinetic energy of the electron in the state n = m to the state n = 1 is C. = 418 nm D. m = 2