What distance does light travel in water, glass, and diamond during the time that it travels 1.0 m in vacuum? the refractive indices for water, glass, and diamond are 1.33, 1.50, and 2.42, respectively.

Which statement best describes the superposition principle? a.) if two in-phase waves arrive simultaneously at a point, their amplitudes add up b.) if two out-of-phase waves arrive simultaneously at a point, their amplitudes add up c.) if two in-phase waves arrive at a point one after another, their amplitudes add up d.) if two out-of-phase waves arrive at a point one after another, their amplitudes adds up