9.3.2 - The Refractive Index
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Practice Questions
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What does the refractive index tell us about light?
💡 Hint: Think about how light travels in different materials.
What is the speed of light in a vacuum?
💡 Hint: Consider this the maximum speed of light.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does a higher refractive index indicate?
💡 Hint: Think about how light behaves as it enters different materials.
True or False: The refractive index of air is greater than that of water.
💡 Hint: Consider the refractive indices of both substances.
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Challenge Problems
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A light ray travels from air (n=1) into a medium with n=1.5. Calculate the angle of refraction if the angle of incidence is 30 degrees.
💡 Hint: Use a scientific calculator for finding the sine values.
An object is placed 10 cm in front of a lens with a focal length of 5 cm. Determine the nature and distance of the image.
💡 Hint: Remember the lens formula for calculations.
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