MCAT Question of the Day
    •

    Q:

    		 The index of refraction for a glass ceiling over a football stadium is found to be 2.5. It is approximately 5 m thick. How long does it take light to cross this glass ceiling?
    		 

    A

    		 5 * 10-7 seconds

    B

    		 4 * 10-8 seconds

    C

    		 1 * 10-8 seconds

    D

    		 5 * 10-9 seconds



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