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Question: The brightness ratio in an office is related to brightness of visual task and its surroundings and it should not be greater than _____ to avoid eyes discomfort. 

Options:

  1.  2 to 1
  2.  3 to 1
  3.  4 to 1
  4.  None of these

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2.)  3 to 1

The brightness ratio in an office is related to brightness of visual task and its surroundings and it should not be greater than 3 to 1 to avoid eye's discomfort.

It will hurt eye if the ratio is greater than that of 3:1. This will eventually reduce productivity.

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