NEET Physics Atoms Questions Solved

An electron of a stationery hydrogen atom passes from the fifth energy level to the ground level.The velocity that the atom acquired as a result of photon emission will be

(a)                                (b)

(c)$\frac{25m}{24hR}$                                 (d)$\frac{24m}{25hR}$

(m is the mass of the electron, R Rydberg constant and h Planck's constant)