CBSE Class 10 Science 2020 Outside Delhi Set 2
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Question : 4 of 7
Marks:
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(a) Water has refractive index 1.33 and alcohol has refractive index 1.36. Which of the two medium is optically denser? Give reason for your answer.
(b) Draw a ray diagram to show the path of a ray of light passing obliquely from water to alcohol.
(c) State the relationship between angle of incidence and angle of refraction in the above case.
(b) Draw a ray diagram to show the path of a ray of light passing obliquely from water to alcohol.
(c) State the relationship between angle of incidence and angle of refraction in the above case.
Solution:
(a) Refractive index of alcohol refractive index of water. So, alcohol is optically denser than water. When a ray of light enters from water to alcohol, it bends towards the normal. Greater the refractive index denser the liquid or material.
(c) Angle of incidence Angle of refraction.
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