Which equations only work for light, and which for particles?

[Darren Nguyen 1F]

I don't know the difference ?

[Kim Chen]

The equations used for light are c=wavelength * frequency.

The equations for photons/particles:
E = pc
E= hv

[Vivianvelazquez_1J]

The equations for photons/particles:
E = hv, where E is the energy of the light in Joules (J), h is a constant which is 6.626 X 10-34 J·s, and v is the frequency of the light in s-1 or waves/s (also called Hertz (Hz).

The equations used for light are
c = λv, when λ is wavelength, v is frequency, and c is the speed of light

[Kevin Liu 1J]

For the most part, it shouldn't be difficult to differentiate between which equation to use as you determine which value you are given in the problem then utilize the respective equation (either E = hv or E = pc). Hope this helps!