How much energy will be carried out by electromagnetic radiation of wavelength $3×10^{-6} m$?
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → $6.63 × 10^{-20} J$
Given, $λ=3×10^{-6}m$
Also,
Energy, $E=hv=\frac{hc}{λ}$
$=\frac{6.63×10^{-34}×3×10^8}{3×10^6}$
$=6.63 × 10^{-20} J$