Question

Which variable is directly proportional to frequency?

Answer 1

Answer: The frequency is directly proportional to energy of the wave.

Explanation:

Frequency is defined as the number of waves that passes a given point per second. It is expressed in Hertz. It is denoted by the symbol $\nu$

The equation that links energy of the particle and frequency of the particle is given by Planck's equation, which is:

$E=h\nu$

where,

E = energy of the particle

h = Planck's constant

$\nu$ = frequency of the particle

Hence, the frequency is directly proportional to energy of the wave.

Answer 2

For this case we have by definition:

v = λf

We observe that we have a linear relationship, where λ is the constant of proportionality.

We have then:

• v: speed of propagation of the wave
• λ: wavelength
• f: frequency

Answer:

The variable that is directly proportional to the frequency is λ, the wavelength.