Sunlight is composed of___________?
Correct answer: B. seven colours
- A. Three colours
- B. seven colours
- C. six colours
- D. eight colours
Explanation
Visible sunlight is traditionally described as seven colours: red, orange, yellow, green, blue, indigo and violet. A prism separates these colours because each wavelength bends by a different amount.
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Everyday physics explains motion, force, work, power, pressure, heat, light, sound and electricity through familiar devices and natural events. Topics include simple machines, friction, expansion, reflection and refraction, lenses, household circuits, electrical safety and magnetism, with mass distinguished from weight and heat distinguished from temperature.
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