The Rectangular Metal Tank Shown Is Filled with an Unknown

question 41

Multiple Choice

The rectangular metal tank shown is filled with an unknown liquid. The observer, whose eye is level with the top of the tank, can just see corner E. The index of refraction of this liquid is:

• A) 1.75
• B) 1.67
• C) 1.50
• D) 1.33
• E) 1.25

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