Question

Long-wavelength infrared cameras detect infrared radiation with a wavelength of 1.0 x 10-5 meters. How much energy is in these waves? Talas​

Answer 1

Answer: The energy of the infrared radiation is $19.8\times 10^{-21}J$

Explanation:

The relationship between wavelength and energy of the wave follows the equation:

$E=\frac{hc}{\lambda}$

E= energy

$\lambda$ = wavelength of the wave  =$1.0\times 10^{-5}m$

h = Planck's constant  = $6.626\times 10^{-34}Js$

c = speed of light = $3\times 10^8m/s$

$E=\frac{6.626\times 10^{-34}Js\times 3\times 10^8m/s}{1.0\times 10^{-5}m}$

$E=19.8\times 10^{-21}J$

Thus energy of the infrared radiation is $19.8\times 10^{-21}J$