What are the minimum number of samples per second if frequency of an analog signal is 3400Hz?

According to the Nyquist theorem, to accurately sample an analog signal, you need to sample at least twice its highest frequency. For a signal with a frequency of 3400 Hz, the minimum sampling rate required would be 2 x 3400 Hz, which equals 6800 samples per second. Therefore, the minimum number of samples per second needed is 6800.