A scientist tests the Photoelectric Effect by shining two, equal energy photons

Question

A scientist tests the Photoelectric Effect by shining two, equal energy photons at a sheet of tungsten metal. Tungsten requires 1.11x10-20 energy to remove an electron. The two, equal energy photons have a total energy of 2.02x10-20 J. Which of the following is TRUE? No electrons will be emitted because the energy of each photon is less than the binding energy. No electrons will be emitted because the total energy is less than the binding energy. One electron will be emitted because the total energy is greater than the binding energy of one electron. Two electrons will be emitted because the total energy is greater than the binding energy. Two electrons will be emitted because the energy of each photon is greater than the binding energy. Provide the answers to the following questions in the boxes provided. Only your answers will be graded, but you are encouraged to use the space near the questions to carry out any calculations you feel are necessary. Include units and the correct number of significant figures in your answers, if appropriate. Consider the following reaction: 2 C_2H_2(g) + 5 O_2(g) 4 CO_2(g) + 2H_2O(l). Answer the following questions regarding oxidation states. Remember to indicate the sign, + or -. along with the oxidation state.

Explanation / Answer

The answer is (A)

No electrons will be emitted because the energy of each photon is less than the binding energy.

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