The work function of a photoelectric material is 3.3 eV. It threshold frequency will be

The work function of a material is the minimum energy required to remove an electron from the surface of the material. This energy is given in electron volts (eV). The threshold frequency is the minimum frequency of light required to remove an electron from the surface of the material.

To find the threshold frequency, we can use the equation for the energy of a photon, which is E = hf, where h is Planck's constant and f is the frequency of the light.

First, we need to convert the work function from electron volts to joules, because Planck's constant is given in joules per second. 1 eV is approximately 1.6 x 10^-19 joules, so 3.3 eV is approximately 3.3 * 1.6 x 10^-19 = 5.28 x 10^-19 joules.

Next, we can rearrange the equation E = hf to solve for f: f = E/h.

Plugging in the values, we get f = (5.28 x 10^-19 joules) / (6.63 x 10^-34 joules*second) = 7.97 x 10^14 Hz.

So, the threshold frequency of the material is approximately 7.97 x 10^14 Hz.