The BIS recommends an average level of illumination for the important road is

  • A. 40 lux
  • B. 10 lux
  • C. 30 lux
  • D. 20 lux
 

The correct answer is option C. 30 lux. Can you explain this answer in the comments?








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The BIS recommends an average level of illumination for the important road is