If there are two photons with different energies, the one that has a higher energy (a) has the higher frequency (b) has the higher wavelength (c) has the higher velocity. (d) two of the above are valid

(a) has the highest frequency

Explanation:

E = hf...where E(is the energy of a photon);h(is the planck's constant) and f is the frequency of the photon

Whereby this formula shows us that energy of a photon is directly proportional to its frequency

So hence if the energy is high then the frequency of the photon is also high

found in the nucleus

has mass of one amu