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Physics, 07.01.2020 02:31 giulissaf

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light passes straight from substance a into substance b without being refracted. what could the two substances be?
a. a could be water (speed of light = 225,000 km/s); b could be air (speed of light = 300,000 km/s).
b. a could be glass (speed of light = 200,000 km/s); b could be water (speed of light = 225,000 km/s).
c. a could be ruby (speed of light = 170,000 km/s); b could be sapphire (speed of light = 170,000 km/s).
d. a could be water (speed of light = 225,000 km/s); b could be diamond (speed of light = 120,000 km/s).

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