Question

it is essential to change the tension on the vocal cord as we produce different sound notes from our larynx​

Answer 1

yes it is essential to change the tension on the vocal cord as we produce different sounds not from our Linux as the Mughal court is the mean of our body which get tension

Answer 2

Different sound notes corresponds to frequencies. The frequencies of the sound depends on the tension in the vocal cords hence, it is essential to change the tension on the vocal cords, as we produce different sound notes from our larynx.