question_answer

To stop the flow of photoelectrons produced by electromagnetic radiation incident on a certain metal, a negative potential of 300 V is required. If the photoelectric threshold of metal is \[1500\overset{\text{o}}{\mathop{\text{A}}}\,\], the frequency of the incident radiation is \[x\times {{10}^{16}}\] Hz. the value of x is_____.

Answer:

7.45