In the diagram above, the values of V1 and V2 are respectively

Answer Details

In the diagram shown above, the voltage division rule can be applied to determine the voltage values. According to the voltage division rule, the voltage across a resistor in a series circuit is proportional to the resistance of the resistor.
Here, the total resistance of the circuit is 3 ohms (1 ohm + 2 ohms), and the voltage applied is 3 volts.
So, using the voltage division rule, we can find the voltage V1 as follows:
V1 = (1 ohm / 3 ohms) x 3 volts = 1 volt
Similarly, we can find the voltage V2 as:
V2 = (2 ohms / 3 ohms) x 3 volts = 2 volts
Therefore, the values of V1 and V2 are 1V and 2/3V, respectively.
Hence, the correct option is: "1V and 2/3V".