If the enrgy of a frequency v is gives by `E = hv` where `h` is plank's constant and the momentum of photon is `p = h//lambda` where `lambda ` is the wavelength of photon , then the velocity of light is equal to

Options

A. `sqrt((E )/(p))`
B. `(E )/(p)`
C. `Exx p`
D. `((E )/(p))^(2)`

Explanation

Gives `E = hv` or `(hv)/(lambda)` ……(i)
but `lambda = (h)/(p)("given")` ……(ii)
Substituting equation (ii) in (i) we get
`E = (hv)/(h//p) = v xx p`
`oe v ("velocity") = (E )/(p)`