Why is a spectrum of colours formed when sunlight passes through a prism?
a. White light is a mixture of seven colours
b. The different colours of light is reflected at different angles in a glass prism.
c. The prism adds colour to the white sunlight.
d. Light travels at high speed.
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When light travel through the air hits the prism, it changes its speed, and is thus enters the prism at a new angle (it's "refracted"). ... So these different colors will travel at different angles in the prism and exit as a "rainbow" or spectrum of colors, rather than as white light.
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Answer:
a. White light is a mixture of seven colours
Explanation:
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