A) 10 : 19 : 7
B) 8 : 3 : 9
C) 8 : 5.7 : 6.3
D) 8 : 9.5 : 4.3
Correct Answer: C
Solution :
[c] Emissive power \[=a\in \]\[{{a}_{1}}{{\in }_{1}}:{{a}_{2}}{{\in }_{2}}:{{a}_{3}}{{\in }_{3}}\] \[\Rightarrow \] \[10\times \frac{8}{10}:\frac{3}{10}\times 19:7\times \frac{9}{10}\] \[\Rightarrow \] \[8:5.7:6.3\]
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