Photo AI
Defects of vision can be corrected by changing the paths of light rays - Edexcel - GCSE Physics - Question 4 - 2016 - Paper 1
Question 4
Defects of vision can be corrected by changing the paths of light rays. (a) Explain why light refracts towards the normal when it passes from air into glass or wate... show full transcript
Worked Solution & Example Answer:Defects of vision can be corrected by changing the paths of light rays - Edexcel - GCSE Physics - Question 4 - 2016 - Paper 1
Step 1
Explain why light refracts towards the normal when it passes from air into glass or water.
Answer
When light travels from air into a denser medium such as glass or water, it slows down due to the higher refractive index of the medium. According to Snell's law, the change in speed results in light bending towards the normal line at the interface between the two media. This bending occurs because the angle of incidence is greater than the angle of refraction, leading to the refraction of light towards the normal.
Step 2