An oil layer that is 5.0cm thick is spread smoothly and evenlyover the surface of water on a windless day. What is the angle of refraction in the wate

SchachtN

SchachtN

Answered question

2020-12-21

An oil layer that is 5.0cm thick is spread smoothly and evenlyover the surface of water on a windless day. What is the angle of refraction in the water for a ray of light that has anangle of incidence of 45 degrees as it enters the oil from the air above? (The index of refraction for oil is 1.15, and forwater it is 1.33)?

Answer & Explanation

svartmaleJ

svartmaleJ

Skilled2020-12-22Added 92 answers

When a light beam from the air strikes oil, we have h
nasinqa=n0sinq0 
1sin45=1.15sinq0 
q0=37.94 
This is the angle of incidence when the ray moves from oil to water 
Therefore, n0sinq0=nwsinqw 
1.15sin37.94=1.33sinqw 
qw=32.12 
Hence, angle of refraction in water =32.12

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