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The wave length of the Green light of mercury is 550nm. If the refractive index of the glass is 1.5, the time period of the electrical vector in glass nearly open parentheses C subscript 0 end subscript equals 3 cross times 10 to the power of 8 end exponent m S to the power of negative 1 end exponent close parentheses

  1. 1.8 cross times 10 to the power of negative 9 end exponentS    
  2. 3.6 cross times 10 to the power of negative 15 end exponentS    
  3. 9 cross times 10 to the power of negative 15 end exponentS    
  4. 2.75 cross times 10 to the power of negative 15 end exponentS    

The correct answer is: 2.75 cross times 10 to the power of negative 15 end exponentS

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