A) \[12.981\times {{10}^{2}}\,\,{{m}^{2}}\]
B) \[9.281\times {{10}^{9}}\,\,{{m}^{2}}\]
C) \[1.69\times {{10}^{12}}\,\,{{m}^{2}}\]
D) \[4.529\times {{10}^{9}}\,\,{{m}^{2}}\]
Correct Answer: C
Solution :
Key Idea: Water is a denser medium compared to air. From Huygens wave theory, we have \[\left( E \right)\] Given, \[\left( v \right)\] \[\left( F \right)\] \[F{{v}^{-2}}\] Note: The speed of light in water is less than the speed in air. This result obtained by wave theory was found correct by Foucault?s experiment.
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