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Easy

Question

In the figure ABC is the cross section of a right angled prism and BCDE is the cross section of a glass slab. The value of q so that light incident normally on the face AB does not cross the face BC is text (given  end text s i n to the power of negative 1 end exponent invisible function application left parenthesis 3 divided by 5 right parenthesis equals 37 to the power of ring operator end exponent text  ) end text

  1. theta less or equal than 37 to the power of ring operator end exponent    
  2. theta greater than 37 to the power of ring operator end exponent    
  3. theta less or equal than 53 to the power of ring operator end exponent    
  4. theta less than 53 to the power of ring operator end exponent    

The correct answer is: theta less or equal than 37 to the power of ring operator end exponent

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