[" When a hydrogen atom emits "],[" a photon in going from "n=5],[" to "n=1" ,its recoil speed is "],[" almost "]

When a hydrogen atom emits a photon during a transition from n = 4 to n = 2, its recoil speed is about ,

The recoil speed of a hydrogen atom after it emits a photon in going from n=5 , state to n=1 state is (in ms^(-1) )

The recoil energy of a hydrogen atom after it emits a photon in going from n = 5 state to n = 1 state is (M = Mass of H atom, R = Rydberg's constant, h = Planck's constant)

A hydrogen atom emits a photon corresponding to an electron transition from n = 5 to n = 1 . The recoil speed of hydrogen atom is almost (mass of proton ~~1.6 xx 10^(-27) kg) .

A hydrogen atom emits a photon corresponding to an electron transition from n = 5 to n = 1 . The recoil speed of hydrogen atom is almost (mass of proton ~~1.6 xx 10^(-27) kg) .

A hydrogen atom emits a photon corresponding to an electron transition from n = 5 to n = 1 . The recoil speed of hydrogen atom is almost (mass of proton ~~1.6 xx 10^(-27) kg) .

A hydrogen atom emits a photon corresponding to an electron transtion from n= 5 to n = 1 . The recoil speed of hydrogen atom in nearly equal to