Do after-tax rates of return for investments in either interest or dividend paying securities increase with the

Question:

Do after-tax rates of return for investments in either interest or paying securities increase with the length of the investment? Why or why not?
Dividend
A dividend is a distribution of a portion of company’s earnings, decided and managed by the company’s board of directors, and paid to the shareholders. Dividends are given on the shares. It is a token reward paid to the shareholders for their...