A film of gasoline ( n= 1.40 ) floats on water ( n= 1.33). Yellow light, of wavelength 5.80x10^2 nm, shines ok this film at an angle of 90 degrees. A) determine the minimum nonzero thickness of the film such that the film appears bright yellow from constructive interference. B) what would your answer have been if the gasoline has been spread over glass ( n= 1.52 ) rather then over water