Which one of the following has greatest energy?

مندرجہ ذیل میں سے کس میں سب سے بڑی توانائی ہے؟

A photon of red light

A photon of blue light

A photon of violet light

None of these

Energy of a photon is given by E = hν, where ν (frequency) is directly proportional to energy.

Violet light has the highest frequency.