Let nr and nb be respectively the number of photons emitted by a red bulb and a blue bulb of equal power in a given time.
Let nr and nb be respectively the number of photons emitted by a red bulb and a blue bulb of equal power in a given time.
(a) nr = nb.
(b) nr < nb.
(c) nr > nb.
(d) The information is insufficient to get a relation between nr and nb.
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