Light travels from water in - 1.33) into an unknown medium. If the angles of incidence is 30° and the angle of refraction is 24", what is the index of refraction of the unknown medium?
1
in, sinne sin 0,)

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