Question

calculate number of photon in 6.62J of radiation energy of frequency 1000000000000Hz

Answer 1

this is the required answer

Answer 2

Answer:

$10^{22}$ photons are present in a 6.62J of radiation energy of frequency $10^{12} Hz$

Explanation:

• According to the quantum theory of radiation, the photon energy is quantized

• For radiation of frequency (ν) the energy (E) is given as

       $E=nh$ν

       where,

       n-number of photons

       $h=6.6*10^{-34} Js$-Planck's constant

From the question, we have

the energy of the radiation $E=6.62J$

frequency of the radiation ν $=10^{12} Hz$

by rearranging the equation

number of photons in the radiation is

$n=E/h$ν

$n=\frac{6.62}{6.6*10^{-34}*10^{12} }=10^{22}$