A) \[\frac{4}{3}\Omega \]
B) 1.50 \[\Omega \]
C) 1.25\[\Omega \]
D) 0.5 \[\Omega \]
Correct Answer: D
Solution :
\[=\frac{{{10}^{5}}}{2\pi }Hz\] \[E=\frac{12375}{5000}\] \[=2.475eV=4\times {{10}^{-19}}J\] \[{{\text{l}}_{\text{eye}}}\text{=}\left( \text{photon flux} \right)\text{ }\!\!\times\!\!\text{ energy of a photon}\] \[{{\text{l}}_{\text{eye}}}\text{=}\left( 5\times {{10}^{4}} \right)\times 4\times {{10}^{-19}}\]
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