Which one of these is non-divisible?

The momentum of a photon with a wavelength of $5000\,\mathring{A}$ is:

If the energy of a photon is $E$ and its momentum is $p$,given by the relations $E = h\nu$ and $p = h/\lambda$,what is the velocity of the photon?

What is the momentum of a photon having frequency $1.5 \times 10^{13} \ Hz$?

$A$ $160 \,W$ light source is radiating light of wavelength $6200 \,\mathring A$ uniformly in all directions. The photon flux at a distance of $1.8 \,m$ is of the order of .......... $m^{-2} s^{-1}$ (Planck's constant $= 6.63 \times 10^{-34} \,J \cdot s$)

Which of the following will have the least value of $\frac{q}{m}$?