Grade 12 Physics: Refraction
This worksheet covers key concepts of refraction, including Snell's Law, critical angle, total internal reflection, and apparent depth, suitable for Grade 12 Physics students.
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Grade 12 Physics: Refraction
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Read each question carefully and answer to the best of your ability. Show all your work for calculations.
1. Which of the following best describes the phenomenon of refraction?
The bending of light as it passes through a single medium.
The bending of light as it passes from one medium to another.
The reflection of light off a surface.
The absorption of light by a material.
2. According to Snell's Law, if light passes from a less dense medium to a more dense medium, the angle of refraction will be:
Greater than the angle of incidence.
Less than the angle of incidence.
Equal to the angle of incidence.
Always 90 degrees.
3. The phenomenon where light bends away from the normal when passing from a denser medium to a less dense medium is called .
4. When the angle of incidence exceeds the , total internal reflection occurs.
5. Explain what happens to the speed and wavelength of light when it passes from air into a block of glass.
6. A light ray travels from air (n=1.00) into water (n=1.33) at an angle of incidence of 30°. Calculate the angle of refraction. Show your work.
7. Observe the diagram below showing light entering water. Label the incident ray, refracted ray, normal, angle of incidence, and angle of refraction.
8. Total internal reflection can occur when light travels from a less optically dense medium to a more optically dense medium.
True
False