～～關於光學的問題～～

Question

A light beam travels in a vacuum at velocity c (~300000000 m/s).
How much energy does the light beam carry? (pls in terms of c, frequency, amplitude and other necessary factors)
　
Thx for answering~

So, if 10 Watts are used to produce 10J/s of light, then what is the frequency and amplitude of the light?

Answer 1

This depends on the power of the light source.
If a source is giving out luminous power of, say 10 Watts, then the light beam it emits will carry an energy of 10 J/s