A smail plate of area `1 cm^(2)` is placed at a distance of `(1)/(sqrt(pi))` metre from an isotropic point source emitting light of frequency `(1)/(6.63) xx10^(14) Hz`, at a power of `2.00 mW`. Assuming the plate to be normal to the incident photons, the rate of photons striking the plate is ) p xx 10^(12) per sec- ond. Find p (h=6.63xx10^(-34) J s)

Answer

5