Tempo is the frequency of a sound and it relates to the highness or lowness of a tone that we hear. true or false.

Explanation :

Pitch relates to the highness or lowness of a tone that we hear. It is basically the quality of sound.

While tempo is the speed of sound. It is defined as the number of beats per minute.

So, the given statement "Tempo is the frequency of a sound and it relates to the highness or lowness of a tone that we hear" is FALSE.

photocells convert light energy to electricity