Chapter 27, Problem 49GP

(a)

To determine

The power absorbed by a sodium atom in watts when a light incident on the area of a single sodium atom is at the metal’s surface. The radius of the sodium atom is $1.7\times {10}^{-10}\text{ m}$, intensity of the light is $1.0\times {10}^{-2}{\text{ W/m}}^2$ that is made of waves rather than photons and work function of the wave is $2.2\text{ eV}$.

(b)

To determine

The time after which an electron will escape the surface of the sodium atom because of the accumulation of energy from the light incident on it, and if the radius of the sodium atom is $1.7\times {10}^{-10}\text{ m}$, intensity of the light is $1.0\times {10}^{-2}{\text{ W/m}}^2$ that is made of waves rather than photons and work function of the wave is $2.2\text{ eV}$. Consider that, the electron collects all the light incident on it.