Answer: The correct answer is "Neither person is correct because light does not change frequency when it travels through different media".
Explanation:
The speed of the wave depends on the medium through which it is travelling. The speed of the light is more in the rarer medium than the denser medium.
Frank says that light travels through diamond with the greatest frequency. Lisa says that light travels through air with the greatest frequency. Both are wrong as the frequency remains constant when the light is travelling from one medium to another. The speed of light is lowest in diamond.
