Passage VI

Consider an electron that is constrained to move along the x-axis. The probability of finding the electron at any given location, x, along the axis is obtained from a distribu­tion function, DF, which is related to the electron's energy. The greater the value of DF at a given x, the greater the probability of finding the electron at that x. Classical theory and quantum theory can be used to derive 2 forms of DF: a classical form and a quantum form.

Table 1 lists the electron energy corresponding to each of 4 DFs. Figure 1 shows the classical and quantum forms of each DF.

37. Based on Table 1 and Figure 1, at which electron energy are both the value of Classical DF and the value of Quantum DF greater than zero at every x between the locationsand?

Answer and Explanation

Your Answer is

Correct Answer is A

Explanation

The question stem requires that the values ​​of both Classical DF and Quantum DF should be greater than 0. According to figure 1, it can be seen that only the first picture, DF1, meets this requirement (the other three pictures have Quantum DF is equal to 0). Then according to table 1, the electron energy of DF1 is equal to 1, so choose A