CUET Preparation Today
How much energy will be carried out by electromagnetic radiation of wavelength $3×10^{-6} m$? |
$1.51 × 10^{47} J$ $6.63 × 10^{-48} J$ $6.63×10^{20} J$ $6.63 × 10^{-20} J$ |
$6.63 × 10^{-20} J$ |
The correct answer is Option (4) → $6.63 × 10^{-20} J$ Given, $λ=3×10^{-6}m$ Also, Energy, $E=hv=\frac{hc}{λ}$ $=\frac{6.63×10^{-34}×3×10^8}{3×10^6}$ $=6.63 × 10^{-20} J$ |
