Question

A TV station is operated at $100MW$ with a signal frequency of $10MHz$. Calculate the number of photons radiated per second by its antenna.

Answer 1

We know that,

$P=nh\nu$

where,

$P$=power

$n$=number of photon

$h$=plank constant

$\nu$=frequency

So,

$n=\frac{P}{h\nu }$

$n=\frac{100}{6.6\times {10}^{-34}\times 10}$

$n=1.5\times {10}^{34}photon/s$