Question

2. (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.
3​

Answer 1

Alcohol is optically denser

That is why the speed of light in alcohol is less than in water.

Answer 2

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