A) \[25\times {{10}^{22}}cd\]
B) \[25\times {{10}^{18}}cd\]
C) \[25\times {{10}^{26}}cd\]
D) \[25\times {{10}^{36}}cd\]
Correct Answer: C
Solution :
Illuminance produce by the sun \[=\frac{L}{{{(1.5\times {{10}^{11}})}^{2}}}\] Illuminance produce by the bulb \[=\frac{10000}{{{(0.3)}^{2}}}\] According to problem \[\frac{L}{{{(1.5\times {{10}^{11}})}^{2}}}=\frac{10000}{{{(0.3)}^{2}}}\] \[\Rightarrow L=\frac{2.25\times {{10}^{22}}\times {{10}^{4}}}{9\times {{10}^{-2}}}\]\[=25\times {{10}^{26}}Cd\]
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